Some of the new social-networking crop (Friendster, Tribe, Orkut) are a superset of the dating standbys (match.com, eHarmony.com, etc.). The technologies seem to be all collectively wanting to converge towards something that fluidly combines the best features of IRC, email, personal home pages, IM, match.com, blogging, and those Japanese devices that beep when you get close to someone who shares your interests.
What will this magical PSA (Personal Social Assistant) look like? As it sits today, all of these sources make me want to write an aggregating front end to replicate similar data to its various sources -- sort of like Trillian on uber-steroids. With a standardized XML-ish format, perhaps something RSS-like ("Real Simple Socializing"?)
Now if I could only get my PSA subcutaneously implanted and automatically route stills of approaching people to facial recognition software so that their name appears on my heads-up sunglasses ... :)