OR, in less active forums, the first two pages of the board can be replied to. This is to avoid duplicate topics when the topic the person wants to talk about is already on the first two pages. In this situation, the 30 day rule does not apply if the thread can be found in the first two pages of the board. If the thread is beyond the first two pages, you apply the 30 day rule above.
I can make a new thread too. i just figured why not post i one already created.