The spam issue is probably one of the stronger arguments against email centered design for bug trackers, code forges and the like. It's a bit crazy that in order to professionally participate in modern software development, you're inherently agreeing that every spammer with a bridge to sell you is going to be able to send you unsollicited spam.

There's a reason most code forges offer you a fake email that will also be considered as "your identity" for the forge these days.