I don't get it...

That would be a question for site admin. Most of us are just like you, here for the ride.

-- Mother Nature created it, I just assemble it. - It's not ability that we often lack, but the patience to use our ability

Probably to monitor intent and prevent Spam attacks. Just a guess.

-- Randy-- I may not be good...but I am slow!

DIYAholic for the win…

Not an admin, but usually sites do this in order to prevent Spamming. With no minimum posting requirement a spam bot could build an unlimited number of profiles, and continuously send emails to an unlimited number of users advertising things…

With a minimum posting requirement the theory is that anyone sending a message has to be a “real” person. Slightly annoying, but I would rather have limits than get a ridiculous amount of junk mail.

-- - Steve Campbell