They send me $20 if I don't play there for a few weeks no matter how much is in my account (have gotten it with basically $4 and as much as over $1000 in account)
Also diversify on merge, I have a handle on everyone of their skins. Most of them do a $500 first time depositors freeroll thats a relatively small field. I have won 2 of them for $250 and cashed a few others all off of a $50-$100 deposit. Most I cashed out the entire balance immediately after as I prefer the Sportsbook Skin on Merge.
Beyond that, having once deposited on them and no longer being active I frequently get $25 sportsbets for free and also $5-$10 casino bonuses for free. It is worthy of note as well that I DO NOT ever EVER bet sports or casino games unless it is a free bet. Yet they still consistently send them to me, make the bet and win and you can transfer over to your poker account no holds barred or rollover etc for cashout or play.
Also FullFlush on whom I only ever deposited once, granted it was $1000 (I was bonus whoring) Sends me $5-$10 from time to time to try and get my play back which they never will.
PS ya, vada just sent me $20 a few days ago too.