http://ysshlyesehcnscptskrpai4iupxccuvfcpbxk37kclbs3rsaqmolzaid.onion/darknets.html
Most adversaries do not have have that amount of network surveillance capacity, but some adversaries do have that - 5Eyes has it, China have that inside China, GCHQ within UKs borders, et.c.) I2P is more of a community than Tor is. It's the Shangri-La behind impassable mountains, with *maybe* 10K paranoid and not-at-all-social inhabitants. Maybe there are more than 10K inhabitants.