While I am not a strong facebook user, I can see that is becoming it's own world. I wish I had more time to explore it. (I like friend wheel as a good way to show social networks). I also find it interesting to see how cross-generational family ties are formed. I have been "friended" by one of my kids (now both adults) but not the other one. I have 21 nieces and nephews some of which have friended me. I am not sure of the etiquette for friending across generations, but it seems to me that younger people should make the decision about friending older family members. The continual connections to all sorts of tools and forms of sharing provide a way of thinking about the connective tissue that makes us part of something larger than ourselves.
Wikipedia is becoming the way to share and build conceptual understanding as well as information about all sorts of things that make up our evolving universe of knowledge. It is a great example of a knowledge building community.
Today I saw a new offering for another form of networking--computational knowledge.
GOOGLE CHALLENGED BY NEW RIVAL WITH ALL THE ANSWERS - WOLFRAMALPHA: A revolutionary new search engine that computes answers rather than pointing to websites will be launched officially today amid heated talk that it could challenge the might of Google. WolframAlpha, named after Stephen Wolfram, the British-born computer scientist and inventor behind the project, takes a query and uses computational power to crunch through huge databases. (from LBN News)
This is a computational search engine. So if you put in a food or combination of foods, you will get the nutritional breakdown. For example, calories in 1 bowl of corn flakes + a glass of OJ will give the total caleries and breakdown for each of these. If you put in a city you will get stats on the city, if you put in a formula, you will get the answer. Unit or money conversion or stock comparisons are easy to do. You can get graphs for different stock and compare patterns over time. Nice interface. Very easy to use. It looks like yet another way of finding out what you want to know.
So much to know and so little time to learn everything... but what fun trying!