Question(s) about posts? Options

[RainyWolff]

Hi, wow, it's been some time since I've been on. Because of that, I have forgottom some things. Now, when it comes to posts, is there a time limit to when you can post on a topic anymore?
I mean, it's June right now, and there are some topics that I would like to post in, but they range from January to April of this year, and maybe a few of the last nonths from 2010, but I'm not sure if there was a rule, or if I would get a warning for posting/bumping in a topic I shouldn't (and if there is a rule, does it still go for the pinned topics -because some of them are from 2009-)?. I don't have an OC, so the topics wouldn't be from the Roleplaying section.