Probably because it can't be 'shut down'.

Gnutella is not a product but an open protocol. If I remember correctly, FastTrack was a closed set of tightly written API's controlled by one company and licensed out to others - hence the ability for the enforcement community to zero in on it.

The fact that XoloX have announced that it has now effectively closed it's doors possibly means that they have been advised by their legal team that, being Danish, they may be targeted next, and so rather than avoid a very costly legal showdown which they probably can ill afford, they have decided to shut up shop and call it a day.

Who knows what the effect of this might be? Who knows if other companies with Gnutella clients will shrug their collective shoulders and say 'there by the grace of God go I' and carry on regardless, feeling that since they are based in the US that they don't have much to worry about. Equally though a move such as XoloX's has the potential to send shock waves throughout the community. If other clients decide to go away then the protocol will be weakened by a lack of supported software.

Rachel