more tumblr oddities

I have noticed that many people like to say “I would kiss you on the mouth” when they like something that someone posted on their Tumblr. The funny part to me is that they say this on the internet, which is basically a big veil of anonymity.

I heard about the ‘tweetup’ in PA, and my question is: Whenever someone said something funny, did they get kissed on the mouth by about 20 different people?