I only recently started to use tags and labels in this blog. So the older blog posts (which are really good) may not - probably do not - have tags / labels associated with them. I wish there was a way to speed up / automate tagging. Let me know if you are aware of any methods.
I am helping my friend Mark Poncy set-up and manage (i.e., I'm teaching him) about social media. Please visit his blog at: Mark Poncy Blog and follow him on Twitter at MarkPoncy on Twitter, etc. He's a very smart scientist, writer, inventor, entrepreneur, etc.