Re: Block eruptor - worth it?

Here's the current bitcoin difficulty: http://blockexplorer.com/q/getdifficulty.

Average BTC per Day = (megahashes per second / difficulty) * 502.91419

for you:

502.91419 * 3300 / 1418481395 = 0.00117 BTC/day = $1 / day. They'll probably pay for themselves in two months with difficulty increasing.