Welcome to the forum.
Cascade Grotto had technical issues with its website earlier this year, but yes it is currently active and has monthly meetings in the Seattle area.
The meeting details and directions on the
home page are current, and anybody is welcome. You can use the grotto contact email address on the bottom right of the page to find out more information.
If you have any problems, contact me and I'll put you in touch with the right people.
(Edited March 2011 to update new website link)