There are different types of visitors being delivered, generally all traffic is "real", or you won't see the traffic. What differentiates them is if it's bot traffic, human traffic, and/or targeted traffic. And each type is a different cost with different result.
Most traffic on digital point aren't real people. They say real aka auto visitors/traffic exchanges/bots but these people aren't interested in your product or service. The only traffic that's real people interested in your products comes from google/yahoo/msn/twitter/facebook ect. and that can get costly.
thats what i thought, i use to buy them long time ago, not one result ever, but this was 7 years ago, i though things might have improved but i guess not..
As usual, you get what you pay for. Imagine how great it would be if you can pay 35$ and get 10000 people who are interested in your site, product or service. Nobody can deliver that Most traffic you will get from forums or traffic sellers are either 1x1 pixel iframes, random traffic from popups and other stuff. It's always the same: You get what you pay for