They say that one of the signs of insanity is where you keep doing the exact same thing over and over, and expect to get a different result.
What do you call it if you, say, hit the exact same button on Comcast's new SmartZone emailer multiple times and can never get the same result twice? Or, you think you've put the settings one way, and it even says the settings are that way, but they really aren't - so you have to repeat doing them three or four times and then obsessively check that they stay that way?
And have I mentioned how much I hate seeing ads on a service that I'm paying for? Especially if they're extra pushy and reduce functionality?
Comcast email, folks. It was basically nonfunctional when I first signed up for High Speed Internet, and I could only check it from a third-party website (mail2web.com FTW!). Then it was most of the way functional (if slightly irritating) for a good long while. Now it's back to being nonfunctional.
(On the bright side, Comcast is still more functional than Bellsouth's offerings. Over there, they had something like three slightly different glitz-covered websites overlapped on top of each other, and you couldn't find anything, ever, and neither could their phone support.)