OPERA ON THE WEB

Ariopera - A Spanish web site listing all sorts of arias, which characters sing them, etc.
Bassocantante's Opera Shop
Bob's Opera Madness
The Collector's Guide to Opera Recordings and Videos
Historic Singers
Historical Tenors
Kico Gonzalez-Risso's Opera Translations
The Legacy of the Diva
Lyle Neff's Libretto Page
Mike Richter's Webpage - Mike has a lot of fun audio clips that he is constantly changing. It's definitely worth a look at!
Northwest Opera Schedule - This guy has done his homework!
Opera Collection - One person's large collection of photos of opera stars.
The Opera Critic - A very useful site with constantly updated links to reviews and articles relating to current operatic happenings.
Opera Jamboree
Opera Magazine Online
Opera News
Opera People
Operaphile
Opera Resource
The Opera Schedule Server
OperaWeb
Opera World
Operissimo - A huge database of bios, schedules and operas.
parterre box - This is the famous/infamous James Jorden's queer opera zine. Give it a look, it's quite interesting.
Soprano Central
Tenorland - This is a really cool page devoted to tenors, of course!
Tips for Opera Goers
Tom Kaufman's Bel Canto Page - Tom is a bel canto and tenor nut.  This page is a reflection of that wonderful style and voice type! 
USOpera Web - A web site devoted to opera happening in the US.
The Virtual Opera House - This is a really neat page. It's a must see!

Misc. Opera Links

Archives of Opera-L
Baroque Opera
Bill's Opera Supernumerary Page - Devoted to what else? Supernumeraries!
Cantolopera - Opera Karaoke
clásica - Your Online Guide to Classical Music
The Classical Singer Community - The definitive publication for the classical singer.
Classical Vocal Repertoire
Jussi Björling Society
Maria Callas Performance Annals and Discographies
George M Martynuk Inc PublicRelations and Artists Management
Metmaniac - A very well done site specifically related to Metropolitan Opera Broadcasts
MidiOpera Co.
Music Timeline
Newsgroup - Classical Music
Newsgroup - Opera
Newsgroup - Wagner
Opera Auditions - A site for singers wishing to gain exposure on the web.
Opera Live! - A modest site dedicated to becoming online press agents?
Opera Mom - The definitive online source of information and support for singing professionals with children.
Opera Stuff -  An invaluable site with a very comprehensive listing of artists' and opera houses' web pages and much more.
Opera Terms - A neat page of commonly used operatic terms.
La Scena Musicale Magazine - Canada's largest classical magazine
Sheet Music Plus - A great site for purchasing any sort of sheet music.
Texts of Art Songs and Lieder
Universe of Opera
Vocalist - The International Singers' Resource Site
Vocal Resource
The World of Art Music
The Worldwide Opera & Concert Information Service - A company that will plan an entire opera trip for you.
Yahoo Clubs - Jose Carreras
Yahoo Clubs - Opera