The publicty on blogs idea seems to have a name now: blogvertising. There are now 50 blogs on the list and growing.
To have an indea of how big (or small) this thing will get, I made a simple program to follow the trafic.ro stats of the registered sites. Only about a third of all sites have the trafic.ro tracker, but it still gives a pretty good idea of how many users are we talking about.
be sure to add all sites involved in that project 😉
Why would I do that?