1) I wanted to find out more information about CI (cochlear implant), and just got caught up on this site. Despite the hissy fits that goes on sometimes, it's been a pretty interesting experience for me to learn about people's different perspectives, what their thoughts are regarding the deaf community/languages/CI/etc.
2) I wouldn't say I "advise" people. I basically go around, ask a lot of questions, read articles/research, and share my own experiences/thoughts.
3) I was born deaf.
4) Personally, it helps me gain better understanding of others. There also has been valuable information about the CI. I got implanted a few months ago.