What's in it for Me?

Ok, so I'm not new to blogs or posting , but what can we as library professionals get out of it? So we get up to speed with all the new whiz bang buzz words? How does that help us in our daily work? Will we have more time to serve customers? Will we be adding more value to our service if we add a blog site? Will our public borrowers even know we have a blog site, let alone making them aware of our website.
Also having read some other blogs, I tend to agree that we don't have time to do these things. I've already spent the whole of this afternoon, signing up to Gmail and setting up my blog page (problems with images already), let alone having to register to the Learning 2.0 program...anyway, I'll have to see how I feel at the end of this program.