I've been signed up with them for a few years. I only do the emails now. When I first signed up I did a handful of trials and earned $60 relatively quickly. But like someone said, they charge a "processing fee" so take that into consideration. For awhile these programs got so competitive, there was a lot of money by companies, that for trials I found better returns and quicker payments elsewhere with no processing fee.
I've cashed out a few times, and it takes awhile to pay but they do pay. I can't remember since it's been awhile since I last cashed out now that I only do emails through them, but I believe it was at least a full month to "process" - sometimes up to 2 months. So say they send out payment on the first of the month. The way they do it, is you request a cashout. On the first of the following month that's when they "close out" everyone getting payments in that group. And they don't send the checks out til the following month. It always took me about a month and a half to get payment from them.