This diagram leads a very provocative post by Alex Iskold from Read/Write Web (1) which reinforces my own prior point about Twitter versus Blogger. (2)
(2)Thoughts Illustrated: A Brief Message - twitter vs blogger?
Amy Jussel commented to my Twitter post as follows:
"I actually appreciate Twitter's free form spontaneity, and can see how I might use it as almost a "Jott" style app to reach thought leaders under severe time crunches who seem to be living on the short form tools. (David's a case in point, eh?)The widget below may just be Amy's "killer app".
That said, your database filtering idea is a 'value-add' that would put it off the charts in my book...
To me, that would be the 'killer app' of relevance that would truly give Twitter the chops to be a 'collective knowledge depository' with value far beyond its current uses as mental floss....