Another gimmicky entry, mostly to test out the new 3.16 installation of MovableType...sadly, we're beyond version pi...
I love the stored info in the address bar of my browser...I can just type a letter or two of the sites I visit most and it'll give them to me quickly. What's in your browser for A-E?
A: http://www.archive.org/audio/ - so much live music for free download, it'll make your eardrums bleed. I've got over 100 shows I taped up there.
B: http://www.boston.com - my home page. Pretty self-explanatory. A close second is the message board for bluestraveler.com, and the home page for bt.etree.org, a place I use for taper-friendly BitTorrents whose artists aren't on archive.org.
C: http://cc.com/artist_detail.html?artist_id=6920 - ClearChannel's concert listings for Blues Traveler. I don't check C pages that often, it looks like - there's a Circuit City rebate page I went to (bought a new 160GB hard drive) and the listings for the Casino Ballroom (saw Ryan Adams and Rachael Yamagata there a couple of weeks back).
D: http://db.etree.org's show maintenance page. I'm an admin there and I'm constantly working on fixing setlists and show records. A huge time waster but it's fun.
E: http://www.erinmckeown.com/tour.php - one of my new favorite artist's tour pages. She's got a new album coming out next month and I just found out she's playing Boston for her album release party, the day after it hits stores. I'm there...

I agree with the "huge time waster" observation in (D).