I mostly tend to photos of friends, but those go on Facebook, where the popularity and privacy settings mean that they're restricted, but available, to relevant people.
Originally this account was used primarily for stuff that required a Flickr account and Fandom (since I knew more Fans off facebook at that point).
Now I'm using to put up any, um, more arty / less people centric photos. Mostly either stuff that catches my eye, or just having fun playing with camera settings, GIMP, or Hugin.