The extremely popular and funny 'ohnotheydidnt' community on live journal has tapped out it's comment quota.
(warning: arithmetic upcoming)
LJ (Live Journal) was designed with a 24 bit limitation on number of comments -in the database and in crucial parts of our commenting code.
This may have been done for speed optimization, resource conservation, for the children, whatever. It was done with good intentions and now we have BAAAD intentions because the theoretical limit for a journal's comments is 16,777,216 (2^24). And ONTD just did *that*.