First, do you have [email protected] in your address book and/or the list of senders that should have their e-mail go through to your inbox? If not you should add it. Also have you double checked the notifications column at http://www.flyertalk.com/forum/subscription.php to make sure they are still set correctly?

If that doesn't work, there may be a problem with your e-mail not accepting the notifications. I just got my latest set of notifications today around 3 a.m. (EDT), and have been receiving them every day for the last week. If the e-mails aren't being accepted, include the domain (the part after the @) for your e-mail address, so the tech support team can check out that as well.

EDIT: It's possible that they're being rejected because of the internetbrands in the header info (Received: from mx5.internetbrands.com ([67.201.16.50])) that's in the notification e-mails.