Thanks to my good friend Gary for pointing this one out:
They did this about a year ago as well. You need to stay signed up for at least 3 months to get the miles, then you can cancel so you sign up for bonuses again next time. 😉
If you don’t want too much junk coming in to your mailbox, my recommendation is to set up a separate e-mail account just for your frequent flyer stuff.
The AA e-mails do occasionally have some pretty good gems in them, though. If you like cheap, last-minute fun trips, the NetSAAver e-mails work out great, both domestically and internationally.
And, as I’ve mentioned before, you can find lots of other great tips on Gary’s blog, View from the Wing.