Charging people directly is definitely a growing niche, but I do believe it's still a niche and likely to remain one.
There's far more money to be had in advertising than directly, so don't ignore it ;)
Re:How To Find An Idea For A New Startup
by jsonscripter on Friday June 12, 2009 @08:16AM
(#654510)
Using google wave, no less!
Or, failing that, you could probably create a Web 2.0 Twitter-integrated mashup of social network aggregators.