Really? Maybe I'm getting old, but I've seen plenty of Ford forums, for all types of things. Then again the quality and traffic of members may be light, area specific or pertaining to a particular club, but as for Mustang forums, I guess you just have to know what you are searching for?
As for bumping a thread, just reply to your own thread. By making a new reply you are "bumping" the thread to the top of the page and/or creating a new unread post in a thread. When people are browsing the threads they will see something they didn't read yet.
Now the process of bumping a thread is an art in itself (

), there are a couple of ways bumping a thread:
-You can just reply with a normal message like anyone else would have
-You can just write "bump" to let others know you want them to see it when they read the thread
-Creatively using the :bump: smiley. Type
colonbump
colon except the
colon is actually written as the punctuation
:
In the spirit of the internet, or lazyness many authors just use nonsense, for instance:
-Replying with the message "ttt" or "..."
Basic ways, but you can always get real creative.
Oh, and :bump: for this thread!
Err... Apparently this forum doesn't have the :bump: smiley though.