So here's a new place to make a little money and to learn the fine art of abstracting: http://www.brijit.com
Brijit is a catch-all for online news, and they hire writers to write 60-100 word abstracts of various articles (from New Yorker, The American Prospect, Business Week, etc.). When you log in to their system you find a queue of works (so far anywhere from 70 to 150 assignments available at any given time). 3 writers can "claim" a job: only ONE will be selected and paid, so be warned.
I've written 4 abstracts. All 4 have been selected for payment. Editors do edit your work. PayPal comes at the end of the month.
It's worth a try. I chose articles that I would enjoy reading anyhow, so the pay is a nice bonus.
There is no limit to the number you can write, but you can only claim one abstract at a time, and you have strict deadlines.