Sadly, we don't enforce putting in comments (development team of 22 people, of which 6 are mostly working with T-SQL). But we have all agreed to doing it and most actually do so...
Posting Data Etiquette - Jeff Moden[/url]
Posting Performance Based Questions - Gail Shaw[/url]
Hidden RBAR - Jeff Moden[/url]
Cross Tabs and Pivots - Jeff Moden[/url]
Catch-all queries - Gail Shaw[/url]
If you don't have time to do it right, when will you have time to do it over?