Which have you guys found more effective? Im curious about this opinion, because I love how you can control the posts when you buy, but the how the post exchanges are more "real". Whats your opinion?
I love the post exchanges. Free - and usually better quality posters. Let me know if you are interested in a post exhcnage.
Neither of them will give your great results. Even if you get lengthly post from them, they won't be interesting or informative enough for other members to reply to. Perhaps if you're very close with a friend who forums a lot of has their own, then it could work. Make sure you give them some information before they exchange, though. Topic, post length, if they should have an avatar, or what areas they shouldn't post in.
It will not give you the result. Forum means the users are chatting, which will not happen if you post in each others forum.
Well it all comes down to the quality of the posters whether "free" or paid. When exchanging, make sure the other person actually is interested in the topic of your site or else they'll make horrible posts. As for paying for them, just because you're paying doesn't mean it's any better, order a small package and see what kind of posters that company has.