I recently wrote about echoecho, an SMS based location sharing service and rather dismissed it as another PlayTxt or DodgeBall, both of which are now shuttered, and argued that EchoEcho fails my Theory of Stuff.

Nick Bicanic, the CEO of Purpose Wireless, the company behind echoecho was good enough to look me up and drop me a long email commenting on my blog post and -- very politely -- pointed out that I might want to revisit my opinion of the service. An edited version of that email to me formed the basis of his latest blog post on the topic of location as a context.

Like a lot of people, I get most of the information I use, both personally and professionally, from the web; from RSS feeds, from keyword search alerts and from Twitter. The genesis of my recent Theory of Stuff slowly accumulated out of this mishmash of feeds, alerts and status updates.

Firstly I read about EchoEcho, a new location based service which promises all manner of good stuff by showing you where your friends are regardless of which location based service they currently use. Let's leave aside for one moment that the service independence of this app seems to be based around the concept of getting all your friends to use EchoEcho and then consistently getting them to report their location. Let's look at something far more fundamental than that, the strong sense of location deja vu harking back over two years ago. Haven't we been here before?