1. not sure what time limit you are referring to. all posts have that little "!" symbol under the poster's name.
2. don't sweat reporting every single forum post a spammer account posts. whenever I see a spammer reported, I click on their name and "view all posts", delete em all and ban the user. So one report per spammer is (usually) sufficient.
Yeah, that little "one report per minute" thing always stops me from reporting crap. I'll be all gung-ho to report a bunch of it, do one, then go to do another, get that message, be annoyed, and give up.
That was probably an unnecessary amount of commas...... ,