Honestly, I only joined to get a "Hacker News" tag on Facebook. Is that how Facebook works? Meaning can other people now see that I am on Hacker News (or rather

Honestly, I only joined to get a "Hacker News" tag on Facebook. Is that how Facebook works? Meaning can other people now see that I am on Hacker News (or rather, a member of the group)? Also, maybe someone wants to send freelance work my way and contact me via Facebook :-)