In the month that I have been getting paid for posting on forums with PostLoop, I have had a few ups and downs, but none were to the detriment of PostLoop or the good people they have running the site. The staff, owner, and community at-large are really great. Payments come fast, approvals come without a hitch, and quality posting is rewarded with good ratings, which of course means higher payment per each post you make.
The only gripe I've had was that a particular forum owner was a prick, but in that event, you just stay away from their forum, and report them if they rate you in spite and not with honesty. No problem there, I am subscribed to quite a few forums anyway, as I suggest you be subscribed to a good number of forums as well. Many forums limit you to 5 posts per day, and you don't want to grind out all 5 every time - there may not always be places to put those 5 posts. Better to subscribe to a quantity of forums, and strive to add a couple of quality posts to each, each day.
I've only made a few more payments since I last posted in this getting paid to post on forums case study, but I've also been really busy working on the back end of this site, working with other properties, and running my case study on getting paid to review music (which is going well, by the way. The next entry in it will include payment proof for that as well).
Earlier in the post, I dropped a hint to pace yourself and not necessarily shoot for the full 5, 10, 15 - or however many posts - you are allowed on a given forum. There is just no need to grind at it. Well, there is also no need to grind at it alone. Invite some friends to the service, join up at the same forums, and suddenly, your time cuts in half. You can be having a conversation with someone and say "Hey, this is relevant to forum A, let's go continue this discussion there". A good idea because you benefit by getting paid, and the forum owner benefits with meaningful content and activity.
Another tip I wanted to give people was not to accept low ratings when you get them without asking questions. If you are posting with a high quality, as you should be to get approved at PostLoop anyhow, and someone rates you good or bad, remember that you have the ability to go over to that rating and comment it. Most people rate anonymously, but they tend to reveal themselves when you show them the what's-what. And the what's-what is that you want to provide a better service than they are receiving to rate you badly, or to thank them for a good rating on a job they find to be well done.
That said, don't get cocky with the people that are paying you - ask them why your rating was poor, and what you can do to deserve an adjustment they can give you now. Offer them to show their forum if they rated anonymously, and to improve for them. Let them know they can give you some extra guidelines and that it is important to you to be rated well with them. Usually, this is all it takes for a person to actually read your posts and reconsider. When given some extra instructions, follow them. You are getting paid well to post on those forums and use very little of your own time in doing so, the least you can do is represent PostLoop to the fullest and give quality, right?
Get over to PostLoop and try it out. Use my link for maximum awesome. In the meantime, here is the PostLoop payment proof for 1 month that I promised at the open of this post. Couple this image with the payment proofs found in my other PostLoop posts, and you can see, you can make a fair bit of extra cash with PostLoop monthly with very little time spent doing so: