U$300 for writing QUICK rewiews of web sites?
May be true. If you think about it, some smart guy with the next 'google' bright idea would like to do a survey of what actually people is doing with the internet. One guy maybe able to give him a 'quick' report, a glance report for say, 200 sites. Hiring 5, will cover 1000 sites.
The content of these 'sites' maybe VERY VALUABLE. A couple of hunders dollars for the reviewer, and a brand new 'google' idea to beat the real google? Priceless!
If you would like to try it, go to:
http://www.freelanceworkexchange.com/pro
good luck!