My call for confirmation worked. I got a second member of the FOCS'07 PC to confirm that 15 rejections appeared in STOC'08. So pending new developments, let's treat this number as roughly correct.
The next steps are to:
- also get a 2nd confirmation for SODA'08.
- look at previous FOCS / SODA, and see how many rejects appeared in next STOC to see whether the numbers are really different. If you were on a previous FOCS / SODA PC and would like to help anonymously, please let me know... I think these statistics would be an interesting factoid for everybody, regardless of what we think of the current STOC.