I see several pictures with well dressed gentlemen wearing a variety of lapel pins, generally not more than one, perhaps two, at a time.

So I wonder, is there a convention or "rule of thumb" that the rabble uses? I know I have a couple and wear them on occasion, but almost exclusively when at a meeting/function for that particular orgaization. Do you wear one all the time, or.just at specific events? How do you decide when or where to wear them?

Just wondering...