Megaphone Mondays?

[solomania9]

I'm looking for ways to boost engagement on http://BitcoinMegaphone.com. Right now it's one of the easiest ways to post text and make a profit online, but not too many people know about it.

Some ideas are sweepstakes and contests where people who make a post on a certain day would get 2x their post cost in tips if they are randomly selected. Almost like a lottery. I'm open to other suggestions as well.