Most of the photo tags should be fairly obvious. Here is a glossary for the obscure ones.

taxi :: Ever since I discovered Parking Spots, I have been contributing to it. We used miniature New York taxis to hold the place cards at our wedding. One of these has been traveling with me since 2003.

mirror :: I every once in a while contribute to the Mirror Project. Actually, I take the photos more often than I contribute.

medium :: These are shots I took with my Mamiya medium format camera

rf :: There are shots I took with my Voigtlander rangefinder

The following are things I am starting to play with an may show up soon

geo :: Geo tagged photos

hdr :: high dynamic range photos

tilt :: tilt shift miniature fake photos

time :: time lapse photos