As much as I love (and NEED) more email storage, you know this is only happening in order for them to send us so much more spam. Somebody's gotta pay for all that extra space.
Have to admit, as much as I tend to usually ignore and be very annoyed by most of the ads, the Gmail ones aren't that intrusive and really are geared more to your potential liking. I've actually had some rather interesting ones, often about halfway decent music. It's kind of funny though when they pick up on a word or two that can have several different references and you get ads that are so out of the way from what you would normally have anything to do with but you can see the word they picked up on.