I'm getting around 100 new followers a day, many of which I'm not needing to follow back.
But monetising (I'm in the UK) isn't easy.
I've read that Adsense is supposed to work well, but I've not found that so far.
One of my blogs is very younger generation targeted so agree that in this instance, they're unlikely to get their credit card and purchase something from eg Amazon. But that's not to say slightly older Twitter users wouldn't?
I'm now thinking i-tunes could work well, so will be testing that next. Maybe you could try that?