Originally Posted by gnedge
Just thought I'd add this for posterity:
If you plan to be in Russia for 72 hours or less, you can pick up a Transit Visa and you don't need an "invitation." All you need is cash and proof of your flight dates.
Good to know, as CO will possibly be announcing non stops to Moscow in 2005 and just about all my trips (anywhere in the world) consists of long weekends with a max 2 night stay.