New Forum for Classical Singers - A Great resource for information, advice, and interminable silliness

TIS Music Catalog - No other online music catalog has as much in stock

Jon Feldman's Home Page - My brother!

YAP Tracker - A great resource for opera auditions of all kinds

Piano Tracker - A great resource for piano competitions and workshops

The Pickle - A blog written by two friends.  Smart, inciteful, and fun (what do you expect from a team made up of a hollywood writer and a political consultant?)