Now I come to think of it..
Social Gatherings. No longer do you just agree a time and place, and meet at agreed time and place. You must first Email the invitees, probably phone/text them to confirm (3 or 4 times) and then as the time approaches, phone/text to confirm it is still "on" and then phone/text as you arrive. Without doing the latter you'll just never find them in that room of people, will you? Either that, or it's a heads-up for the flamboyant entrance you are about to make, surely?
And whatever happened to making friends whilst you are out? Now-a-days people don't "mingle" unless it is a friend of a friend. Society was built on people mingling, now it's come to an end and there is little interaction with those outside of your "clique."
Meeting people (i.e. prospective "partners"). What ever happened to "What's your phone number?" Now it's "You on facebook? Add me" and then a scurrilous review of your 'profile' before a decision is made to meet you again or not. It is also very hard to "disconnect" from those you break up with because of this "social-networking" which can make break-ups all that more difficult when you have practically their whole life documented on-line.
Online-dating. What. The. Hell. What happened to just plucking up the courage to ask someone for a drink, or just a plain old introduction? Now you have to categorise yourself and pick from categories of available people, and practically take an interview before you even meet! And no matter how eloquently put your profile, they won't believe a word of it!
Speed-dating. Meh. Just meh.