I used to use an MX record that had mailinator handle nospam.jrock.us email addresses... but stopped doing it for anonymity reason. ("whois nospam.jrock.us" whoops there's my home address!)
The alternative I currently use is letting Gmail handle the spam. I used to be big into jon-foo@jrock.us for "foo" and that sort of thing, but every address ended up on every spam list anyway, and the filtering didn't increase the signal to noise ratio.
For true throwaways I just use mailinator. If I want to receive email from someone someday, I can just create another account. If they spam me, Google will filter it out. So it goes.
You use jon-foo-randomchars@example.com because then you can be sure where the address was leaked from and which companies are selling your email address, and to provide additional signal to the spam filter. If you use just jon-foo@, then that's guessable and you can't go off on them for selling your email address when they said they wouldn't.
The alternative I currently use is letting Gmail handle the spam. I used to be big into jon-foo@jrock.us for "foo" and that sort of thing, but every address ended up on every spam list anyway, and the filtering didn't increase the signal to noise ratio.
For true throwaways I just use mailinator. If I want to receive email from someone someday, I can just create another account. If they spam me, Google will filter it out. So it goes.