Yep. I've also seen a few people using the same strategy I do of [email protected] so they can recognize when email addresses get abused and trivially filter them.

For what it's worth, I have cleaned up enough servers hacked by spammers that I'll never send one. I guess I should mention that.

That works until someone writes a script that removes any \+[^@]+ from specific email domains :)

I've never seen that (or any other purposeful filtering of address tags.) On the other hand, I can't count the number of sites that were just programmed with an address validation regex that is unaware of the existence of address tags, and therefore thinks your email address with a plus in it is invalid.

You need an address to get the slides download link in his case.