Twitter- a money maker

I just read an article about how to make money on twitter. Me being a poor college student, I began to wonder if there was a way for me to use twitter to get some extra money. I was able to complete step one, setting up a twitter, but I'm still establishing a following. I did not realize that you could start to sell ad space on twitter- which is step three. I also thought I can starting posting my blog more often on my twitter account, which is step four. So after reading this I began to think, is this really the way to make money off of twitter? I can understand how having advertising on your twitter page can get you some revenue. But I think selling ad space on your twitter account is not the way to go about getting money from twitter. I feel that selling ad space on twitter kind of ruins the personality of your twitter page. I like that there is no ad space on the sides of twitter pages. It's annoying how there are ads constantly rolling down the side of facebook....so it's nice that there are no ads on twitter.