Even the newest of new members can post ten times an hour. (once every 360 seconds= 6 minutes, 10 times per hour)
After around a week or two, it will drop to around once every minute (60 times an hour !)
After around two months it will drop to 30 seconds (120 times an hour !)
And finally, it will reach 12 seconds after around 3 months, dropping by an additional second every month and a half. (300 times an hour, finally increasing to 900 times per hour)
So, don't worry, your time will drop, rapidly.
Also, PM limits for anti-spamming
I've adjusted the limits to make spamming more difficult.
Activity | Min. seconds between post actions | Max PM recipients | PMs per hour |
0 | 360 | 3 | 5 |
16 | 74 | 5 | 30 |
30 | 60 | 5 | 60 |
60 | 30 | 5 | 60 |
100 | 12 | 10 | 120 |
200 | 10 | 15 | 120 |
300 | 8 | 20 | 120 |