[andrewaylett]

My understanding is that Google strips full stops before comparing email addresses and accounts for equality, which is really annoying when people split their email addresses differently at different times, making them look distinct when they are actually the same.

[myko]

It's really useful to me.

I have a filter for messages to: [e-mail]

which marks the message read and moves it out of my inbox.

This is the address I give out to companies whose correspondences I don't care to read generally but don't necessarily want to go directly to the trash.

[scott_karana]

You can also use + suffixes, which allows you to label.the address.

[e-mail] for example.

[SoftwareMaven]

Assuming the crappy regex on the form will accept it.. :( It's better now, but I still fail about 20% of the time.

[sesqu]

Similarly, I give out period-wise permutations.