I will use a randomizer from 1 to 10,000 (if the number of tickets sold are less than 10,000, say 8564, the randomizer will be set to draw from 1 to 8564 and so on).
Scam!The way to do it properly is to use data you can not manipulate (easily) like part of the hash for some future Maxcoin block. But I guess you will
not go with such approach, it would massively reduce your chance to win this lottery.
Some love the lottery and some don't. It's hard to please everybody, but calling it a scam is a bit over the top. I guess most things is a scam in your eyes. Some people were calling Bitcoin a scam when it first came out and look at it now.