A 301 redirect is a way to forward one web address to another. People most commonly use this if they have changed their website address and want people who type in their old address to be permanently forwarded on to their new one. However there's another reason to consider a 301 redirect that many are not aware of.
Did you know that http://www.tracypetrucci.com is not the same thing as www.tracypetrucci.com, even though when you type them in they will take you to the same place? Search engines do not see these two as the same, which can hurt your ranking in search results.
For example, if both of these addresses have 25 inbound links, each will only rank according to the 25 links. But if the two were connected with a 301 redirect, the website would be ranking as having 50 inbound links, which is a little more desirable.
Want to find out if you need to set one up? My favorite quick and easy website to use is called Pear Analytics. No hassle, so signing up, just type in your website address and see what they spit back at you! By the way, it's likely there will be me many other things that come up which require updating for better SEO. Don't be overwhelmed, just handle one thing at a time. Pear Analytics is great too because they will prioritize your to-do list for you!
Now get to work. . .