I sometimes have trouble navigating this forum, as far as the user info goes. I think I got most of it figured out, but I read a thread about tank info in the profile, which I didn't even know there was a place for. I think I found it, but even now I'm not sure if I'm missing something.
I also know that some people aren't too crazy about sharing personal information, which I can understand. There have been problems with crazy people on another forum that I go to, and now I try to be careful about what personal information I post, and I never put my location until I have been on the forum for awhile and get a feel for the place. You might be suprised at what a person can find out about you from just a little information and the internet.
I know you have to be cautious on the internet but filling in the area won't let people trace you. I doubt whether anyone would be able to trace me on the strength of knowing that I lived in the Cambridgeshire fens. A general area just helps people to know where you are in the world. Of course never use your actual name or phone number.

(Maybe its just me?) I didn't even know that there was a place to post tank setups until there was a thread on it. I think I figured it out, but it took me awhile to figure it out. It would be useful if when you signed up, it asked you to set up your tank profile, but I bet that alot of people signing up will want to skip it because they already have a problem and want to post about it ASAP because thier fish are unwell.