Did you read the thread? Why don’t you do what I did? Write an EMail to hello@etoeto.com (with the mail you’re registered here) and ask. I got an invite within 24 hours.

The reading he asks for is the most common reading. So when you see the kanji in a word you have a good chance of guessing the right reading. Personally, I prefer to just learn vocabulary instead of kanji reading. Unfortunately the Anki decks provided here are hiragana only so you need to look somewhere else.

I would really like to try it. Is there anyway to get an invite?