I like talking to strangers in shout very much and therefore won't stop doing it, thank you.
It's what makes a game social, random interaction, one of the things most people coming from other games complain about with FFXIV is that they stand in a city with 400 players around them and no one says a single word.
It's like a ghost town.

About people shouting "please invite me"...well, I kind of agree with you on this one.
It's annoying, because I either join shouts or build my own parties.
And there even is the player search feature now for lazy players who only want to put themselves up for inviting.
Why not just use that?