I double checked. I attempted Ameriplan a number of years ago and I would put it in the category of a scam. They attempt to sell "low cost heath care" as discounts from doctors and pharmacists. They are legit, but I'm pretty sure you have to pay and the vast majority of people who sign up to do it will make nothing. They are probably pretty big right now with the health care laws in a shambles.

A few legit places that I've used in the past:

http://www.writerswrite.com/ Has a classified section geared towards freelance writers.

http://www.workathomecareers.com/workathomemain.html
Legit site with a lot of possibilities in many different fields. Even though they are legit, some of the postings may not be so use the rules of thumb I gave to be safe.

http://www.tjobs.com/ Another good one with lots of IT and telemarketing jobs.

I hope this helps a lot.