In my best knowing such topsites are in most cases using colo with excellent peering. In comparing, most company file shares are local in office for best transf

In my best knowing such topsites are in most cases using colo with excellent peering. In comparing, most company file shares are local in office for best transfer speed. A other possible similarity situation is useing for XDCC bots: such bots have similar idea of usage compromised machine but are mostly lower grade computer than a topsite.