I hardly browse these forums any more. Best to PM me.
Concerning the questions:
If you don't get any ads (the amount of advertisers is rather limited), this can have multiple reasons:
1) You have a minimum bit.
2) You have to few visitors (2000 - 3000 views/day average give a nice rate)
3) Skyscraper / button ads are the least used ones. The square and banner are used more often by advertisers.
Payouts have been officially reduced to 1 BTC... until the whole situation with MyBitcoin started. I had to stop the automatic payout system.
For the time being I do payouts manually, once a week. With that, depending on how many publishers have to be paid out, I use often a 0.5BTC cut off. But it might be different from week to week.