T&S still gets a pretty decent amount of traffic from searches on "accounting definitions". In a prior response, Kevin put up a note on this post.
I wanted to point to another page that may be of help as well. Reuters has just started a Financial Glossary wiki. Maybe this will prove a help to those people looking up definitions.
Another reference that's invaluable for my students (it's even in my syllabus) is Campbell Harvey's Hypertext glossary of finance terms. The url is:
http://www.duke.edu/~charvey/Classes/wpg/glossary.htm