We’ve updated the search on the site so it includes meta data. WordPress doesn’t search this data, tags & categories, out of the box so we’ve added it in.
So if you want to search for sites built on a certain platform type the platform in to the search box and hit enter, the same goes for networks.
We have removed the links to Networks & Platforms from the side bar as a result of this update. If you have any problems with the search then please let us know.