This transaction is perfectly valid. I provided a free sample of services, I'm entitled to iTrader for that, it's just like a trade. The thread starter could have worded it that he's looking for some free sample posts and will provide iTrader to those who offer a free sample. If one makes 10 posts as a sample like this, it shows that they can complete a basic service that is purchased by DP members, receiving iTrader for that is only supporting the system, as long as it isn't abused. I wouldn't suggest giving iTrader for somebody who posts 10 posts of "lol" "me too" and "PM sent"...