Yeah, 'way back when' we tried to think of other names for the site, but stuck with what we had. There's a shocking lack of good domain names, and this name actually means something to those who started the site (check the 'about' link above).
Besides, we're now a word in Google! Try searching for 'plus 613' with a space, for example. Lots of people know the name of the site, no point changing it now
Though, titsandassforbushhaters.com does have a certain ring to it