Online ad posing job legit?

[Jake]

There's no possibility of it paying anything close to that, such a potential earning statement sounds like s acam setup, $200 a week would still be optimistic, knowing the number o useful ad sites that limit you to 1 ad a day or completely ban you after posting too many ads, I suspect much of the time they just want to use you up with a few ad then don't pay you.

You might have a look at the detailed list of $ penalties for violations you agree to pay when you sign up with Craigslist.org, though realistically they only go after larger professional posting services.
http://www.craigslist.org/about/liquidated.damages