I really like Safari.oreilly.com and O'Reilly in general. I thought it was kind of odd though to see a banner ad for a Microsoft product (SharePoint) on LQ. Neat Nutshell artwork (although turkeys would be more fitting to the subject).
I doubt if Microsoft will get many converts here, and O'Reilly probably won't sell many copies of this book either. Since there are plenty more relevant books for O'Reilly to advertise on LQ (Zope, Plone, Python, etc.), someone might want to suggest updating the banner rotation for this site--unless this is some kind of experiment.
You also might want to verify that you really want to show your institutional ad so frequently. I didn't do the math but I bet it's over 95% of the time: