One thing that quite bothers me is this whole notion that it's named after a feminine hygiene product. I just don't see how usage of the word "pad" is somehow automatically associated to this meaning. It seems many of the haters have grasped onto this and used it as a means to criticize Apple.
Some other bloke stated he was frustrated by it, but if you stop and consider one of the hottest selling products, the Nintendo Wii, in the last few years is more likely associated with a male body part, you'll see this whole notion of the iPad being attributed to female napkins is ludicrous.
The first thing I thought of after hearing iPad was "note pad."