Crowd sourcing data is a laudable approach. Crowd sourcing data and putting it one a map seems like a good idea. Crowd sourcing data and putting it on a map without any verification or checks? You might not end up with what you originally intended.

This is a lesson that Benadryl, the hay fever medication, has sadly learned the hard way. At first sight it seems innocuous enough; a hay fever relief brand teams up with the UK's Met Office to crowd source areas where there's a high pollen count.

If any industry sector is uniquely poised to benefit from the triumvirate of social, local and mobile, it's the classified listings industry. The last time I spoke about whether do embrace SoLoMo or just embrace social, local and mobile I cautioned against the tick in the box approach and against adopting new technologies just because you're exhorted to.

But at first glance, a business running classified listings does seem to put all the right ticks in all the right boxes.

Firstly local. Classifieds are inherently local, offering a way for local businesses and individuals to offer ... stuff ... to other local people. Implementing a local strategy needs your mainstay offering to have a strong geolocation quotient and what could be more local or more geolocation than addresses and postal codes?

Then there's mobile. Most classifieds businesses have either fully or partially transitioned from print to online and if you already have an online presence, you're more than half way to having a mobile online presence.

Finally there's social. Again, there's a strong affinity with classifieds. Nothing spreads faster than word of mouth reputation and harnessing the power of social media to allow people to say "hey, I just found this really cool stuff" is a compelling case for social.

So when the International Classified Media Association, the ICMA, asked me to talk about SoLoMo at their Social, Local, Mobile: Classified Media Strategies conference in Instanbul last week it was an ideal opportunity to see whether my preconceptions to be skeptical about SoLoMo were borne out in practise or whether I'd just overdone the cynicism a bit too much.

One of the many things I like about writing talks for a conference is that the talk often morphs during the writing process as I research the theme and try to make the narrative at least vaguely coherent. Of course, it also helps that when you're asked to be a speaker at a conference, the organisers often want the title and abstract up to 3 months ahead of proceedings. 3 months is a long time in the tech industry and a lot can change.

Which brings me to the talk I gave a month ago at the Location Business Summit in Amsterdam and again today at the Click 6.0 Digital Marketing conference in Dubai.

I'd originally wanted to talk about the importance of digital maps in SoLoMo, the much touted convergence of social, local and mobile. The more I researched this, the more a feeling of déjà vu crept into my thinking. I was sure I'd seen a much talked about and much feted tech phenomenon turn out to be more hype than substance. Much as hyperlocal, which I approached from the point of view of a hopeful sceptic, turned out to be more hype than local, SoLoMo gave me the same feeling of unease.

With the benefit of hindsight, it was probably inevitable but 5 years after the location based, check in social network we know as Gowalla launched and 3 months after they were acquired by Facebook, Gowalla is no more.

Despite launching in 2007, 2 years prior to Foursquare, Gowalla never seemed to be able to capture attention from either users or from the media in quite the same way as Foursquare. The similarities were many; both social networks used location as a key facet, allowed users to check in to locations they were at or near and to share those locations with other users and other social networks. But while Foursquare's game mechanics of badges and Mayors seemed to hit the right note with users, Gowalla's ill explained and ever morphing system of virtual items, spots and trips never seemed to make sense. No-one I've ever spoken to could explain exactly what the point of Gowalla was, whilst Foursquare's mechanics were simplistic and easy to grasp.

After loosing ground to Foursquare, Gowalla tried to act less as a sole source of checkins and more as a central aggregator of the disparate checkins from itself, Foursquare, Facebook and Twitter, amongst others, but this move did little to slow Foursquare's ascendancy.

Regular readers of this blog will be aware of my comfort zones when it comes to speaking at conferences. If there's maps, geography or location involved, however tenuous the connection, I'm well within my comfort zone. But speaking to a room full of seasoned communicators, such as Public Relations professionals? That's way outside of my comfort zone.

Nonetheless, on Monday of this week I found myself at the Chartered Institute of Public Relations, in London's Russell Square, at the CIPR Social Media Conference 2011, allegedly talking about something called The Smartphone Web, to just such a room full of seasoned communicators.

Exposure 2010, the recent study by Orange and TNS, makes for some interesting reading for the location industry. Although it should be taken with a large pinch of salt from the pot labelled lies, damned lies and statistics, the study's report shows the significant increase in use of geolocation services within the mobile space.

In the UK, France, Spain and Poland, geolocation services occupy the 3rd, 2nd, 1st and 2nd slots respectively for most used mobile services. While the report only breaks geolocation down into two categories, streetmap/GPS and social networks, it's not difficult to see how the perception that location is finally going mainstream is worth some merit.

In my recent talk to the British Computer Society's Geospatial Specialist Group, I touched on the "race to own the Place Space". While the more traditional geographic data providers, such as Navteq and Tele Atlas are working away adding Points Of Interest to their data sets, it's the smaller, social location startups, that are getting the most attention and media coverage. With their apps running on smartphone hardware, Foursquare, Gowalla and Facebook Places, amongst others, are using crowd sourcing techniques to build a large data set of their own.

For them to do this, the barriers to entry have to be very low. Ask a user for too much information and you'll substantially reduce the number of Places that get created; and thereby hangs the biggest challenge for these data sets. Both the companies and their users want the Holy Grail of data, quantity and quality. But the lower the barriers to entry, the more quality suffers, unless there's a dedicated attempt to manage and clean up the resultant data set.

It's time to put the Theory of Stuff out to pasture. It's had a good life. It's appeared in 5 of my talk decks (or so Spotlight tells me), in 3 of my blog posts and continues to generate hits on my blog (or so my analytics tells me).

When I tell people I'm going to talk about my theory, a Mexican wave of shoulder slumping passes through the room, coupled with a prolonged sigh from an audience who've just resigned themselves to a slow painful death over the coming minutes. Luckily things perk up when my introductory slide of Anne Elk (Miss) and her Theory appears but even so, it's time to quit whilst you're ahead.

But before I do ...

Want to upload photos to multiple social networking and photo sharing sites, such as Flickr and Twitpic? There's an app for that. Pixelpipe seems to work for me.

Want to update your status on multiple social networking sites, such as Twitter and Facebook? There's an app for that. Tweetdeck seems to work for me.