Is going to be reputation and quality of information. Geeks intrinsically know this as SNR (signal to noise ratio), an the rest of us the amount V1Agra emails versus real ones.
To clear up the signal we are going to use a noise reduction filter. Slashdot (www.slashdot.org) has been doing this ages with their comment moderation system. I really do think though, the next killer app of the internet is reputation management and global distributed content rating system.
The first major obstacle is solving the SSO (single sign on problem). And it seems this is proving far trickier than remembering your girlfriends birthday. (makes mental note)
Forums are powerful but fall prey to manipulation. The largest forum of all, Usenet, made popular by Google's Groups is one such example. Searching in a competitive industry such as "backup products" results in "xyz is great, abc is crap" posts from the opposition companies employing drones to post anonymous negative sentiments about competing products. Companies have realised that value misrepresenting and the inherent trust browsers have in reading comments. The older and wise of us are few in numbers.
This is linked to SSO (single sign on) problem. Once we have an open, practical way to link identity information amongst sites
How do you carry your reputation around everywhere? Blog comments, forums, usenet posts, irc chat, email, IM. Thats right, it the SSO (single sign on) problem. Once we have an open, practical way to link identity information amongst sites
*THIS IS A WORK IN PROGRESS* but if I dont post something I never will :)