How about something with the bdsm or the library name in it....

0-500...........Intro to bdsm or New to library
500-1000......Oriented to bdsm or oriented to library
1000.............established to bdsm or established at library
5000.............Contributor to bdsm or library
10,000...........conissour of bdsm or library

not really flashy but thought it diferent...hahah