Google sounds via Twitter announce that you are changing the algorithms for your search engine. The idea is to limit the number of hits to two per site, this in order to increase diversity.
In some cases, exceptions can be made if the hits are deemed more relevant. So we can probably expect that anyone searching for music from their favorite artist will continue to receive a number of suggestions from Google-owned YouTube.
The new algorithms are domain-based, which means, among other things, that subdomains such as www.pcforalla.se and m3.idg.se are equated with idg.se.
The new algorithms have already started to be used, but expect it to take a while before they work as intended.