The “social graph” is a global mapping of everybody and how they’re related. I had a play with a visualisation tool for Facebook relationships last night and it was great. Slightly scary but fun nonetheless. However, our weblives are not just about Facebook (although Facebook does provide a platform to bring them all together). Google’s OpenSocial is promising to provide another way to pull them together but, as Brad Fitzpatrick points out, a centralized “owner” of the social graph is a dangerous thing. Social networks need to be made open and portable. And they can be.

Tim Berners-Lee stated in a post yesterday that

…we have the technology — it is Semantic Web technology…

In other words, the connections and relationships made possible by the semantic web (or social graph – use interchangeably from hereon). He goes on:

Now, people are making another mental move. There is realization now, “It’s not the documents, it is the things they are about which are important”. Obvious, really.

and on opening up this data:

It is about getting excited about connections, rather than nervous.

So, yes – I am excited but how are we going to do this? Think data feeds, microformats and openID – things that would tend to be met with blank stares if I were to suggest them to clients. But show a client how you could remove barriers (such as log-in/ sign-up) to that all important “conversion” (with openID or microformats – here’s an excellent microformat implementation doing just that) and show how this person would be able to instantly tell all their friends about it (via their social graph) and then they’ll be interested.