I noticed this too and thought maybe it was a glitch. I was in a hurry and
trying to post my usual comments before leaving for work but was unable.
I had to just leave the window open and abandon my comments. I came
back later and thought "Didn't I post in this thread?!" And realized that I
couldn't because I didn't have time. It was very disappointing and annoying.
I think a time limit is great but the double posting I've seen is sometimes due
to what kymaera said, connection time outs. There is one person I can think
of right now that has been posting and reposting in the same thread over
and over (an infamously heated thread) so maybe a mod should contact
him directly about that? I don't think he knows the rules and I don't think
the time out feature would prevent someone like that from posting en masse.
Maybe 3 minutes is a tad long? I do like the concept here, but it just feels
too long and some of us don't have that kind of time to wait. At 3 minutes a
post, and you want to post in maybe 10 different threads, that's 30 minutes.
Edit: I was posting this, then Magician posted, sorry if I am just
repeating things!
Also, it seems this timeout applies to editing your posts! I am currently
waiting to publish my edited comment

LOL