I don't know who is writing positive reviews, but this company looks like total fraud. I wanted to try out short campaign with 100$ and see how it goes. But support guy in the live chat convinced me to pay 300$ + gave me 150$ bonus. Ok, nice.
BUT at the moment I've paid 300$ this guy immediately disappeared from the chat! A little strange strange, don't you say? So you interested in clients ONLY before the pay you? Great attitude.
After 24 hours from the start of the campaigns stats were still 0. I mean views, impressions etc. I've wrote several emails to the support but received no answer. After that I've asked for the refund, and still haven't received any answer from them.
Awful customer support, if to be more exact there is no support at all. If I don't get any feedback about my refund request in the next few days, I'll make YouTube video with the overview of my Virool experience and share it with whole Internet. Be sure, I'll make that video viral :) I already created screenshots + downloaded invoices (just in case). Hope it doesn't come to that and you'll get my money back.