[le_douard]

Personally I would love to receive something like that message.

I consider (And share in my CV) my stackoverflow, github, and linkedin are good representation of what I can do as a professional and thus I am careful with what I share on those. Meetup might be a stretching it a bit if you also use it for hobbies and you don't like sharing those on your CV.

This guy has done his homework, and has checked a lot of sources to make sure YOU fit the position before contacting you, that takes time and that time is his company's money. So frankly I would take it as a sign of a company that really gives a lot of F*cks about who works for them.

Again depending on how you use Meetup he might have overstepped a bit. For example mentioning your facebook, google+ or others might have been too much for me too.