Breivik hid 46 unvalid URLs in his "manifest", which contain geocoordinates plus some so far unknown code. Example:http://52.068.4.309plusf24
full list here: http://app.homelien.no/~oystein/manifurls/urls-unicode-ordered.txt
There were various maps made on base of the coordinates:http://maps.google.com/maps?q=http:%2F%2Fgoo.gl%2FF2HAE&hl=en&sll=48.0225,6.322&sspn=35.24582,64.643555&z=5
The blue area around each point is the valid area, since the coordinates are not very exact. Many think these might be terror attack sites for some so far unknown terror cell which stood in contact with ABB. An effort was started to crack the codes behind the coordinates, not much has been acchieved so far, a lot of known algos have been proven not relevant though.
I recommend you read through the mailing list a bit:http://lists.homelien.no/pipermail/manifest-analysis/
Lots of speculation on why these places could have been chosen there, some examples:
The Munich coordinate is right next to the SPD headquarter for Bavaria
One of the Brusselless coordinates (50.832°N, 4.364°E) points to a district with a large congolese population, it even got his name froma place in Kinshasa, Congo: Matonge
The one in Hamburg is near to a university
The Amsterdam one is near a mosque
and so on...
Now my question is this: Do you think it would be smart if some bitcoin/maths/programmer pro would write a bruteforce tool to decipher the so far unknown meaning of the codes behind the coordinates? Or maybe someone is so smart and recognizes what these numbers+letters+serbian(!) lettes could mean. I for one have never seen anything like this, but i´m no pro at all.