The bolded text on the forums only indicates a thread with posts you haven't read yet. Once you click them, they'll go back to being regular font. Your second question has been answered in the previos Q&A thread. No, you can't edit your own thread titles.
Sorry about the new posts. This thread won't let me edit my posts. That said...
How does one get that really nice eye catching dark text in the title of ones thread? I can't seem to get this done.
Can one change the name of a thread?
Thanks in advance, yours,