Some of my  favorite sites:

• Broadway Cares/Equity Fights AIDS - a great organization
• Playbill.com - all things Broadway
• Broadway Stars - even more things Broadway
• Broadway Show League - softball on Broadway!!!
  

• Mary Beth Temple - selling and restoring vintage linens 

• Spoiled Brats - cat rescue and pet supplies
• Petfinder.org - nationwide animal adoption
  

• The Breast Cancer Site - Fund free mammograms.
  
• Overstock.com - I'm so addicted.
• Scrabble - even more addicted ($10/year).
• Sock Lady - colorful is an understatement.