I think it would benefit the site if the giveaways require a minimum of atleast .005 to get in the giveaways...
Also I think it would be cool/beneficial to have a tally market up at the top which tells how much btc is collected at that moment... Not the amount totally invested. This will give more of a strategy effect in when to invest, and will calm users down when it gets close to payout time, since they can add all the amounts needed to be paid out before it gets to them.

I don't know, possible ways to make the site a little better imo... Love the fact that this thing has been going on for so long, hope it keeps going. Been a long time since I've really had faith in a Ponzi, might come bite me in the ass though, so I'll be careful when gambling here.