Since November 2008, Google Blog search's link command has been scanning too much information, including blogrolls. Since then, Google vowed to fix the blogroll issue with the link command back in early December. At the end of December, Google said they fixed the issue but there was still more work to be done. That was indeed true, because there are still many complaints over Google Blog Search's matching skills.
Googler, Jeremy Hylton, has said that Google is going to be releasing a "user visible experiments early next month," which is next week, to better target Google Blog Search's issue with "blogroll detectors" and the link command.
You can find Jeremy's post in a Google Groups thread, I will quote it here:
This is just a brief status report. We've been continuing to experiment with blogroll detectors. We're going to do some user- visible experiments early next month, probably starting with link: queries. I'll follow up here when the experiments are running.
Forum discussion at Google Groups.