If you have a decent-enough amount of traffic on your company website, surely the few extra visits from within your own company won’t skew the figures dramatically, will they? Well, no, but they can prove irritating. For example, it’s only you and your colleagues who are going to look at pages the moment they’re posted, and it’s irritating to see this phantom traffic putting spikes on the visitor graphs in this way. You might also make specific Google searches to see where you appear, click through, and have that search recorded forever. Anyway, it’s a fairly easy process to remove your own (or any other) identifiable traffic from your Google Analytics results in the future, so I’d recommend you do it. Historical traffic from your company will not be removed by this process, so it’s worth doing now, or at some stage in the future you may be irritated that you didn’t.
The instructions are in the article Back to Basics: Filtering out your own IP address on the Google Analytics Blog. The concept of “profiles” in Google Analytics is one of the hardest to understand for the average user, but don’t worry about it. The other tricky bit is that they say “remember to use regular expressions when entering any IP address” as if normal human beings had any idea what “regular expressions” were. But there’s a tool for doing that here. Update: although the article says you have to use “regular expressions”, it would appear you now do not have to: there’s a box for you to enter the IP address directly.