It's great that you guys now allow removal of bad sitelinks through Webmaster Central. But sometimes the sitelink is incorrectly labeled for no fault of the site owner, and the sitelink just needs to be corrected, not removed. For example, note the typo below in the sitelinks of stevespanglerscience.com:
In the above screenshot, you'll notice one of the sitelinks says "Pangler Science Experiments." The word "Pangler" should actually be "Spangler." I checked, and there is not a single occurrence of "Pangler" anywhere on stevespanglerscience.com or on his blog at stevespangler.com. However, I did find such a typo in the anchor text of a link appearing on this blog. So it appears Google is trusting the anchor text of a single blogger over the site's own internal linking structure? This should probably be looked into too, since bloggers make typing mistakes, and the site owner has no control over that.