if you can work it well, and at a very high pace, then start a service. there are plenty of places to double if not triples what you spent.
if you can do it with unique comments and have all go through perfectly on high PR blogs, and everything, then your gold.
im not one to boast but
i offered a service on another forum *not mentioned* and made a little over 500
in a week.
i have a service here as well, but i only use sb for the harvesting part, everything else is manual. it works better. so, use it wisely, watch some videos first, test it out, act as a customer would, then start a free thing up and move up