I love all these stack... sites, but there's rather a lot of them.
I've bookmarked http://stackexchange.com/sites as my starting place, but this is ridiculously difficult to find. There's a tiny link somewhere in the footers.
If users sat neatly within a particular site there would be good reason to hide this, but I find myself contributing across several and it's always a pain remembering what they're all called.
Request: put a (css pop-up?) link at the top of all sites, along with chat, main, about...