I don't think they are a scam network.
I've withdrawn 4 times from them.
The only problem is that earnings are lowering by day I think.
On 2016-03-26
16 Clicks - 446 Impressions - 0.00119383 BTC
On 2016-04-04
48 Clicks - 4,088 Impressions - 0.00036379 BTC
your earnings depents on clicks per view that means if you got 10 views and 10 clicks your earnings are very higher than 10000 viewls and 50 clicks.
kind regrads
more probable is that value of clicks depends on visitors location, but anyway 36,379 satoshi for 48 clicks is very low reward