Gay yellow pages - The Original Lesbian, Gay, Bisexual and Transgender Information Resource since 1973
Gay Seattle - This site is primarily focused towards gays and lesbians but does have information for those of us who are bisexual, it's definatly worth a look
Sapphos's Health Services - This is a site for a low cost women's health service located in Seattle for lesbians, bisexuals, and transgendered people
Pride Foundation - This foundation is working to strengthen the gay, lesbian, bisexual and transgendered community...depending heavily on volunteers and philanthropy they raise funds for grants and scholarships. Their vision is to build a world free of prejudice :)
GBLTC - Gay Bisexual Lesbian Trangender Commission is a support group at the University of Washington. This is a new site (but not a new group :)) and is not completed yet but seems to be very friendly and supportive :)