http://g7cpug4k6ydyq5dlxrji35xnfq5n5rba3n7holux4tmdsm42ju543tad.onion
Just like at the protocol level, the anonymity set at the network level is the number of people among whom we are hidden. If the total maximum anonymity set is 8 and most of them are spies, then we don't really have a large crowd to hide among, making network-level spying very easy.