http://rambleeeo4vhxgorpmgunoo276nkiw7bos74cg7tjlgnb3puj3d7ghad.onion/f/Ramble/166/ramble-the-first-48-hours
Not many people use it, but it's worth noting. It's similar to browsing the clearnet site via the Tor Browser and being notified that a Onion Service is available for the website, same concept. Speaking of I2P, the developers behind I2P+ included a link to ramble.i2p in the console of their I2P router dashboard , so that is pretty rad.