Dear vika
All the "titles" are simply an indication of how much a person has posted.
A Carpal Tunnel is usually but not always someone who has been here awhile. Or it can be just that someone has posted a lot in order to get the title.
Most of us wish we could get rid of titles as they seem to many to be rather silly and childish ... but they are apparently built into the board software.
I pay no attention to titles but rather concentrate on what is written. Content is what is interesting to me.
Hope that clears it up for you.
If I can be of further help please send me a Private Message (PM) by clicking on bar at top of the page.