Quantity over quality on making multiple AdSense sites?

I see a lot of crappy blogspot blogs with little to no content. Literally, the whole site is just plastered with AdSense ads and maybe one or two paragraphs of copy/paste content. Is it worth spending your time and effort to make a bunch of these sites?

 

I don't think it is worth wasting time.. but I'm not sure, maybe it worked in the past and now doesn't work as well.

 

Pure suicide if you ask me.

 

It just wasting time, it wouldnt generate any income

 

these types of sits are usually made by starters. just to get the feet wet and get a feel for the business. i'm sure they will learn over time

 

according to the zillions of whiners around here about the panda update, its not worth it.