I actually don't have a problem with people seeing me online; honestly, it's just a habit from the very old days when I made myself invisible on any forum I signed up on (keep in mind, I was a customer before I was a developer here).
And while I can see reasons for it, that doesn't mean that I necessarily have an opinion one way or the other. I'm more than happy to make myself "visible" if that gives people a warm fuzzy, I just hope that people will understand that it's not an invitation to send me "hey, can you look at this?" PMs and then get upset because I didn't see their message at that particular moment.
Please do not PM me for support or sales questions. Thank you for your understanding.