The Dos and Don'ts article is a good one...sadly, the people who need to read it most won't. Last week a guy walked up to me without even making eye contact and held out his hand in the "shall we dance" manner...but I'd never met him, so it was kind of weird. I did dance with him and chatted a little between songs so now it's fine, but it was strange the first time he ever asked me! Another does not pick up on the fact that I'm not making eye contact and refusing to turn away from conversations for him and will break in to invite me. sigh.