Consider me “declared.”
I’ve found it’s good practice both to disclose my status in my profile AND to bring it up early in conversation (after a rapport is established, but before plans to meet are made). Because let’s face it: many people don’t read profiles, and plenty of those who do can’t be bothered to google the terms they don’t understand.
I’d love to see monogamous folk declare themselves in their profiles as well. Just because it’s the norm, doesn’t mean it must remain unsaid. I don’t want to waste my time or energy any more than I want to waste yours.