I found a few of them on the internet:

Candace Cameron Bure

http://www.candacecameronbure.net/

Dave Coulier

http://www.cleanguys.tv/

John Stamos

http://www.johnstamos.net/

Mary-Kate & Ashley Olsen

http://mary-kateandashley.com/

Bob Saget

http://www.bobsaget.com/

If I find the other cast members sites, I'll post them here.

Also, Dave Coulier, Bob Saget, and Candace Cameron Bure have their own official MySpace pages.

what about Bob Saget and Jodie Sweetin do they have a website

I found Bob's official website last night, so it's listed in the above post.

I haven't found any official websites for Jodie Sweetin, Lori Loughlin, Andrea Barber, Scott Weinger or Blake & Dylan Tuomy-Wilhoit yet.

I did find update pictures of Blake & Dylan though:
Blake:
http://us.imdb.com/gallery/hh/0876770/HH/0876770/iid_937009.jpg?path=pgallery&path_key=Tuomy-Wilhoit,%20Blake

Dylan:
http://us.imdb.com/gallery/hh/0876771/HH/0876771/iid_936927.jpg?path=pgallery&path_key=Tuomy-Wilhoit,%20Dylan

They're still cute boys at age 17.

Now all I need is Jodie Sweetin

here is the official website of the twins nicky and alex
the official page of blake and dylan

http://www.blakeanddylan.com/

Sorry to bump this up, but I found the addresses of the official myspace pages of some of the Full House stars.

Blake & Dylan Tuomy-Wilhoit http://www.myspace.com/fhboys

Jodie Sweetin http://www.myspace.com/i_luv_full_house

Lori Loughlin http://www.myspace.com/lorianneloughlin34

Candace Cameron Bure http://www.myspace.com/candacecameronbure

Bob Saget http://www.myspace.com/bobsaget

Dave Coulier http://www.myspace.com/cleanguys

John Stamos http://www.myspace.com/the_real_john_stamos

In order to view some of these sites, you must have a MySpace account. I have Candace, Lori, Jodie, and Dave on my friends list.

does Kimmy have a Myspace