Kat,A 'virtual' calendar would negate the whole point of this idea. I (and I hope I'm not alone) would like to do something 'different' - something that you can hang on the wall.
A virtual site (particularly hosted by tripod) will just result in rubbush pages, written by people who don't understand design, and that no-one will want to visit.
It wouldn't make any money, and beyond allowing webdesigners to smirk at how bad amateur sites are, I can't see any purpose.
Ed