From: Patrick Aljord Date: 2008-04-30T13:04:34+09:00 Subject: Re: Hey, try out Flock > If anything, it isn't Flock's (or LinkedIn's, or Facebook's) fault that > the sender didn't exhibit due diligence. > Unfortunately most people still think the internet is internet explorer or that "blue e" so don't expect them to know that kind of stuff (though I'd expect that a rails subscriber would know that). Facebook and Linkedin et all do know this is going to happen and it does happen a lot, so yes, they are at fault too. Twitter I think doesn't do this, it just checks if your contacts are on twitter IIRC.