I read about this one in the USA Today... a new travel mashup that incorporates a little social networking enabling users to setup a more web20-ish profile, save trips, search for travel related info, join groups etc... I'm still fumbling around but so far it's quite clever. See www.vibeagent.com
I wish I could save past trips and include handy info about the trip.. hotel details, restaurant info etc... for example, I wish I could recall the name of that great Thai place in San Fran I ate at or the Indian join in San Jose... maybe that will come next. I do like the reviews and the ask an agent feature is cool!