Captcha posts from new accounts for X amount of time, then? (Or X amount of time starting with their first post). Allow mods to short-circuit the time for posters deemed sufficiently human.
Crowdsource idea: Make “verified human” a separate flag in accounts. Designate a trusted circle as verified human. Allow any verified human to verify others as human. Posters of unknown species have posts start at −1 or −5. (I guess this is a degenerate case of /. meta-mod).
Captcha posts from new accounts for X amount of time, then? (Or X amount of time starting with their first post). Allow mods to short-circuit the time for posters deemed sufficiently human.
Crowdsource idea: Make “verified human” a separate flag in accounts. Designate a trusted circle as verified human. Allow any verified human to verify others as human. Posters of unknown species have posts start at −1 or −5. (I guess this is a degenerate case of /. meta-mod).
Those solutions would require a bunch of new code. Much easier to withhold posting powers from users with under 5 karma.