This category lists all residents who are currently active. The opposite category for residents who've "quit" Second Life is Category:Retired Residents. Retired residents are residents who have partially or completely quit Second Life. (Partially meaning the owner did not cancel the account and never comes back, while completely means the owner cancelled his account and did not prevent its deletion.)
Pages in category "Active Residents"
The following 24 pages are in this category, out of 24 total.