Being rather proud of AdWords as a means to effectively advertise one's products or services, it seems natural to use it ourselves. Since it's a common practice across the industry for companies to promote their own products and services through their own web presence, there is much precedent to do this.
It's important to note, however, that our ads are created and managed under the exact same guidelines, principles, practices and algorithms as the ads of any other advertiser. Likewise, we use the very same tools and account interface.
As does any advertiser, we aim to give our campaigns a budget which is in line with their value to us in terms of the increased traffic we might see. We actively monitor and manage the success of our ads by adjusting ad copy, keywords, bids, and so forth in the same way any advertiser who is concerned with their account performance would.
That said, there are no special buttons to push or levers to pull that give our internal account managers special treatment or leverage. Quality Score is automatically evaluated in the same way for our keywords as it is for any advertiser's keywords. Likewise, the potential to show up in the top spots above the search results is the same for Google's ads as it is for any other. We rely on the AdWords system to let relevancy and usefulness to our users be the driving force behind our ad placement. As such, we do not intentionally try to secure a top position. In fact, we generally aim for a more 'conservative' position.
As was already mentioned, there are no algorithm changes to 'smooth the way' for Google's ads -- and the accounts of 'competing' advertisers (should there be any for particular keywords or Ad Groups) are never referenced in any way.
We're quite proud of the advertising platform we've built and it simply makes sense for us to use it. At the same time, the trust of both our users and our advertisers is of paramount importance. We honor that responsibility, and work hard to earn and keep that trust.