Does this kind of advertising work?
 

I have seen couple of ads on many sites where people offer to pay $100 -$1000 bucks a month for hiring 3rd world folks to advertize (or spam) their sites in various message boards, blogs, directories, blah blah
Has anyone actually tried it and if yes then was of any use?
Do you think it will bring in more $$$

Sounds... Fly-by-night.

Contact them and ask for references.

well, it really is advertizing in a way but i wonder if accompnied by $ productivity

so i guess not many here are trying it ...yet atleast

It is only beneficial if you are running a toolbar / malware install. Most decent and active chatboards turf spam so fast that there is no benefit if you are pushing a legal product. Basically you have to plan on the ads having a very, very short shelf life.