I would tell people that I answer questions and enjoy giving advice to people on internet Q&A sites... But I would not tell people specifically the website name and any identifying info.
If they happened to be also avid Q&A people I may tell them (probably not), but otherwise no. I feel like I wouldn't be THAT hard to find on the website if they started going on regularly and keeping a lookout for me. I do have my face in my profile pic after all.
I don't find GAG embarassing really-- I don't know why offering advice would be, but I don't know if I want some people in my life to know all my thoughts on stuff on here.
The only person who knows is my boyfriend. I'd told him the site in general just because I often bring up a few of the crazier questions/opinions I read. Not my username though, until he saw it by chance when he was helping me fix my laptop 2 weeks back or so. Which kinda sucks, not because I'm hiding anything from him on here but.. it's cool to be able to have an sort of social media account completely separate from anyone I know in rl, y'know? Lets me divulge a bit more personal details that I would otherwise never do.
He promised me that he trusts me though, and that he wouldn't snoop.
Well I've only ever trusted two people to tell them about GAG, it's like my best kept secret lol (where I can be freeeee) but not my username though. They were both so disinterested though I felt like I should not have told them smh :/