Johannes Beus
Matt McGee noticed that Google is, seemingly, step by step, turning off the queries that showed which pages of a project were in the supplemental-index. While, at the moment, it is still active on the datacenters that are responsible for Europe, it already looks bleak for a few American datacenters.
Rand Fishkin confirmed this assumption and is pointing out that Matt Cutts, when he learned that such a query exists during SMX, announced a speedy shutdown thereof. With this, Google is closing down an extremely important possibility for Webmasters to detect and fix possible mistakes in the site- and linkstructure of their projects. We can only hope that this query – similar to the linkquery – will return in the Google-Webmaster-tools. If we take a realistic guess about the timing of this, while taking into consideration the speed with which the linkdisplay was implemented, we should be able to look forward to this feature sometime around 2015 ...