Indexing a book is no fun. None at all. Yet it can be so annoying when a book has a perfunctory index that I feel compelled to try to do the job decently.
You can only work on so many pages at a stretch. Distractions are needed. One that works for me is opening up sci.logic in Google groups every so often and sounding off. Hence a rash of posts battering away at some of the dafter stuff there. Who knows if anyone appreciates it … but it keeps me amused, and is one of the more harmless ways of wasting time on the web.