The question is does it work. By work I mean using PostLoop temporary to acquire content and activity on a new forum and then tapering off of said when ready. After seeing, literally, several hundreds of forums use this service, over a four and a half year period, the answer is unequivocal and resounding NO. Some forum owners have spent many thousands of dollars in paid content, only to have their forums just as dead as soon as they delist from PL.
The reason why is quite clear: the heart and soul of any forum is the content it contains, and more importantly, the personalities behind said content. With the exception of some solid writers (most of whom are long gone) PostLoop serves up the kind of people you don't want on a forum:
- Writers with little or no knowledge of your forum subject matter, who often post stupid or obvious content. Most won't read any introductory material or the forum rules.
- Young people with no life experience and limited education.
- The unemployable, burn-outs, and washed up hacks that are trying to earn less than a dollar an hour on that site.
- Individuals with very limited English ability. Some are also outright hostile to western nations and will voice that sentiment.
- Conspiracy kooks, political cranks, and other mentally strange people. (One of the most active members there is a trailer-dwelling conspiracy theorist, for example.)
- Outright toxic individuals who troll forums for fun and profit.
- And the inevitable genius that publicly mentions they are posting for money.
- ... and so much more.
Once your cash is dried up, all of your PostLoop "members" are long gone. The forum owner is left with a bunch of useless blather, less funds, and the sad realization that he/she utilized paid posting on their forum. In summary, care about your nascent Internet community and avoid this so-called "service".
P.S. There is a competitor to PostLoop called The Forum Wheel. Everything written here also applies to them, except they have significantly less forums and the content actually manages to be worse.