If you’re using Google Analytics, or any other web analytics tool, you must start now to tag your inbound links/campaigns so you can track their effectiveness.
Visit Google’s tagging page for details on how to use utm_source, utm_medium and utm_campaign, the three required parameters that make up campaign tracking.
Omniture’s SiteCatalyst has an even more extensive implementation of this through their default s_cid parameter that allows you to correlate campaigns across more dimensions than Google. But no matter who you use, start using it now.
I’ve placed campaign tracking tags on my LinkedIn profile and even on the signature of my outbound emails. You would be surprised how many people click on those links to learn more about you and your company.
A word of caution, I have found at least one place where you cannot place these campaign tracking tags, Google Local Business Center. Surprisingly, the addition of the three utm_ tags above threw one of my customer’s listings into Flagged’ state for over a week. That state supposedly sends it to Google for review. After a week I couldn’t justify not having my customer listed in Google’s local search any more so I removed the tags.