Social's probably something you need to figure out for your career. Do it for you - don't do it because it's cool or any other reason.
Need a compelling reason beyond the usual "everyone is doing it?" How about Mark Zuckerberg telling a biz accelerator group that he believes social sharing is governed by the same growth dynamics as computer processors? More from Gizmodo:
"If you thought people were already sharing way too much on social networks, you're in for a rough future. At least, that's what your buddy Mark Zuckerberg thinks, and it's probably safe to say he's might know what he's talking about.
Zuck dropped the knowledge in a talk at Y Combinator's startup school today. He put it this way to Y Combinator co-founder Paul Graham:
"It's sort of social networking version of Moore's Law. We expect this rate [of sharing] will double every 10 years. So in 10 years from now, people will be sharing about 1,000 times as many things as they do today."
For those of you that need a little refresher in Moore's Law, here it is via Wikipedia:
"Moore's law is the observation that over the history of computing hardware, the number of transistors on integrated circuits doubles approximately every two years. The period often quoted as "18 months" is due to Intel executive David House, who predicted that period for a doubling in chip performance (being a combination of the effect of more transistors and their being faster).
The law is named after Intel co-founder Gordon E. Moore, who described the trend in his 1965 paper. The paper noted that the number of components in integrated circuits had doubled every year from the invention of the integrated circuit in 1958 until 1965 and predicted that the trend would continue "for at least ten years". His prediction has proven to be uncannily accurate, in part because the law is now used in the semiconductor industry to guide long-term planning and to set targets for research and development."
Let's assume for a second that you think Moore's Law is absolute BS related to social sharing. First up, Zuckerberg probably has access to information about the habits of a Billion Facebook subscribers, where your reaction is based on - well, you.
Then think for a second - let's say social sharing moves at a pace 2-3 times slower than Moore's law. It's still a big tidal wave. And there's you, saying you don't get it. You don't have time. You don't see the value.
Good luck with that, my friend. People who can't aggregate networks of interest through sharing and other social activity are going to get phased out, put in non-thinking jobs, etc. The move's really already started, and it's not about people like me with a blog. It's really about everyone, and the trend is coming for you, king of like the grim reaper.
Be ready when the trend arrives at your doorstep.