If somebody is asking to buy paid posters for their site am I allowed to link to my paid posting site? I would say something along the lines of "*link* I own a paid posting site. We offer high quality posts at an afforadable rate etc etc etc." Would that be considred hijacking the thread or anything?
ahkip is correct - PM them (and only if they're asking for services like yours - if they're asking specifically for individuals, and you PM them to pitch team packages, they might consider it PM spam).