[cm2187]

I took the habit of giving a unique random alias to every website or service who requires my email. The additional benefit is that I can single out where the breach (or spam) came from if I see that unique alias. I only started doing that about 3-4 years ago and so far only the dailymotion breach popped up.

You can also do that with gmail by using the [e-mail] syntax but it's well known and trivial for a hacker to defeat.

[giarc]

I've found that a lot of sites will not accept an email with a + in it nowadays.