On posting, under one's user name, there is a 'title' (in my case Junior Member), but I see a lot of posts where the members obviously put something funny there. How is this done?
After you have made a certain number of posts, an option opens up in your Profile area, and then you can change it.
Not sure, but I think it's either 10 posts or 100 posts that enables the change.
Go to "User CP" (in the menu bar near the top of each Glock Talk page), then "Edit Profile", and scroll down to Custom User Text to make the change, once it's activated.