Alex - you could always just create a FB page for your modeling stuff, and not post any personal details. I did. That way you can follow other modelers, manufacturers, groups, etc.
A couple more comments: 1) I echo that it is easier to post photos on model cars mag forum (and Facebook) than here, and 2) forum vs. Facebook - forums are much easier for discussing topics than Facebook. I'd vote for modeling activity moving back to forums that would have easy methods for posting pics!