I've added a few more alternate domains. If you've never used them, they are simply other domains (for example, sogetthis.com) that forward all email to Mailinator.
Simply, if you send email to firstname.lastname@example.org - or - email@example.com it works exactly the same way and your email will arrive in the "fred" inbox at Mailinator both ways.
You can find alternate domains (including the new ones mixed in) on the front page of Mailinator on the left column.
I'll be sneaking more into the rotation soon!