Why is the maximum of recipients of our PMs of 10?
It's not that much.
I'd suggest giving us a max of 20: it'd just make big things like contest/mafia games/clans/etc. talk easier to each other while still preventing massive spam. ;o

I might raise the max PM amount by tier.
Norm: 10
Reg: 20
Vet: 25
Elite: No Limit (probably 50 or such)

Does having the limit set to 1 prevent spambots from doing any harm? Or they can compose messages too quickly for that to matter?

As for the poll at hand, I don't care.

There is no by us coded "cooldown-time" of sending PMs. I bet IP mainly added this to avoid having a mega-super-ultra-query being run at once

Done

I'd stick with a limit, just to prevent someone from maliciously creating a new account and spamming everybody.

If you really do need to PM that many people just copy/paste the message, it's not much extra work, only several mouse clicks and that's about it.

I'd personally go for:


But anyways!

I think it's fine at 10/15/20/25. Time to go promote myself to Elite, I guess.

Pointless.
If I ever need to send a PM to 15+ recipients, I would just copy and paste the PM, make a whole new PM, sent it to 15 more recipients etc.

So what happens if someone from the first group you PM replies to everyone? The second group wouldn't see it.

It isn't pointless, it's just not necessary for things other than forum games.