on the web there are 3 basic user sources: search, social nets, news sites. search requires lots of good content; if you are using large dbs as raw material ar

on the web there are 3 basic user sources: search, social nets, news sites. search requires lots of good content; if you are using large dbs as raw material are adding real value on any scale a long tail search strategy will make sense. no campaigning just make sure google can read your site and you have good stuff. social will work if a dialogue between users is intrinsic to your product. a virus will take hold if you make a good facebook experience. either of these are added to a more important factor: your users ongoing experience. this will not only create viral opportunities but will make all of your efforts additive. save the news for last, once the others work you will be a news story effortlessly.