Several websites I frequent have been posting up ads to hire individuals to write/blog/tweet. What caught my attention about these ads were that they required applicants to have an initial base following. If you blog, you needed to prove you had x number of readers. If you tweet, you had to have x number of followers. I'm not completely familiar with the mechanics of it, but this sounds to me like these websites aren't as interested in "hiring" writers as they are looking more to purchase an audience base.