yes, not sure if they don't have a newsletter
They do have a newsletter. I get them. The promos they have on their website are just the ones in it tho and no other unique promotions. Unlike other casinos that I am currently subscribed to which gives out free spins from now and then.
They are pretty much active on twitter for giveaways and here in bitcointalk for contests.
Yes, they are. Here's the newest(clickable):
The number of participants is huge, though. I've looked through the submitted numbers and then picked "998" because it looked like nobody has picked it, and now I hope that among 627 entries I will be the luckiest one. What are the odds? But anyway your chances are zero if you don't participate.