It took me a while to understand the point of Twitter but at the Recruiting Road Show I saw the light.

You can search them outside of your network and outside of your network can search yours.
You can also add a URL of what you want to promote, shorten it with Tiny URL and make it appear in both your Facebook and Twitter Status.

You will need to have both a Facebook and Twitter account.

Add the Twitter application on Facebook
http://apps.facebook.com/twitter/

You can then update Twitter from Facebook and Facebook from Twitter.

Write your blurb, for example "I am looking for IT Account Executives in SF, NYC and LA"
Take the URL of your job description to Tiny URL and it will spit out http://tinyurl.com/5tbvj4
(normal URL's would be too long)

Then cut and past "I am looking for IT Account Executives in SF, NYC and LA http://tinyurl.com/5tbvj4"

Those interested can click directly on your link.
You can also do this for resumes or events.

(I know they are slightly quicker ways to do this...