What is SEM anyway? Well, here's my best definition:

Search Engine Marketing is a constantly evolving strategy focused on an ever moving target.

And, if you're a small business owner currently advertising in the Yellow Pages, it's a strategy you'd be smart to learn or outsource right now. The meteoric rise of local search, and the rapid fall of Yellow Pages use, coupled with the integration of Social Networking is a phenom you can't afford to ignore and you won't want to be on the outside looking in. TIP: It's happening FAST…