Traveling to NYC for BlogHer or Vacation? Get Double Membership Reward Points with AMEX

This special offer just came in my American Express Membership Rewards newsletter and I immediately signed up. I am a card member and a practicing Membership Rewards points compiler/hoarder.  I'm also heading to the BlogHer conference in NYC in August, so I signed up for this immediately.  From now until September 5, 2010, American Express Card members heading to the BlogHer conference,