Is there some way of knowing the full size of the network?

I guess the "peers in cache" is not the full size, but I am not sure at all. I usually have 170-210 peers in cache.

i dont think there is a way to see the whole network. i think the 'peers in cache' number is who you are connected to.

I think the peers in cache can be used a fair estimate. I've found unreachable peers in the list. It could be someone that had Fopnu open and then closed it. Or firewalled / NAT.

Is there some way of aproximating the size? On ed2k and gnutella2 is possible