A bit late to this discussion, but in response to OP, I think this all comes down to personal preference. I'm a sporadic poster on here - come in and lurk multiple times a day, but only post occasionally. When I'm really missing the game, my presence is much more pronounced, and I'll post many times on a given day. In all the time I've been here, I've never shared my irl name.
Everyone here is very kind, and there are of course some well known posters here for whom I have respect that is akin to "rockstar idolization," but I have not personally been well known. That said, if I communicate with folks and make some good friends on this forum, I might SOMEDAY reveal my real name PRIVATELY.
Now, since the shutdown I have played two MMOs: Final Fantasy XIV and The Secret World. I currently play and love both, although TSW is more my style than FFXIV. In XIV, I have joined a Free Company (guild) and have made some close friends with whom I have bonded in real life as well as in-game. These people have been there for me and with me while I have suffered from depression, sudden deaths, illness, difficult living situations. They have also been there when I have finished my book, gotten engaged, found a new job, and new home. It was only after a long period of connection and bonding - over two years in this game - that I finally revealed my real name and some information about the "IRL Me." Even then, I only told that information privately to people who I trusted most.
That isn't to say that I "only share that information with people who are worthy." I am, quite simply, extremely guarded with my personal information. I'll be happy to share my struggles with mental disorder and excitement about my books, of course. However, sharing details about who I am and where I can be found I treat very differently.
As with many of these things YMMV. You're welcome to share as much or as little information as you are comfortable sharing, but I guard my "real identity" somewhat selfishly.