Nope, just make sure that when you do offers, do ones that you think are good. like anything that's not a Srvey ( because those are actually something that needs skill to do) and when doing offrs, don't click on the same one if it doesn't work the first time, because it wont work the second time either lol.
Don't do survys, half the time they don't pay out.
Look for the ones that say, E-mail confirmation needed, as they usually go through, and if they don't you have proof you did the offer.
If you have an iPhone or iPad, the download app offers are VERY good (super rewards offer them I believe). You can get up to 400 AC's per app you download, and all you need to do is scan a QR code. The ac's come almost instantly, and you can then delete the app.