You need to increase rewards, more than 2 satoshis, and you will get more attention.
Also, with your free-roll, in several months, I never get a number higher than 9900.
If someone ever had a number greater than 9900, please paste the proof of validity here.
Regards.
We had a proof in Twitter a while ago, but you need to dig deep in order to find it. We did set the chances similarly to FreeBitco.in - we used and keep on using FreeBitco.in for several years now - never won $200 or $20 in the site, and we do spin the numbers at least several times a day. The chances are built same way.
Another note is to not forget to pick up the promo codes from our Twitter account (link in the signature or in the site itself).
Well I'm currently using daily your 13 sites, I hope to get at least 99.01 for once.