This blog is about Adventism, but the Maria Divine Mercy cult is much like Adventism – false prophecies, teachings contrary to the Bible, etc.
In fact they’re quite similar to Adventism in some ways, as Supertradmum points out on her blog Etheldredasplace: WOW from A Reader
9 things you need to know about “Maria Divine Mercy” – Jimmy Akin
A closer look at the false prophecies of Maria Divine Mercy – New Advent
Internet False Prophet – on the Maria Divine Mercy – True or False? blog
Having it Both Ways with Divine Revelation – on the Refuting Maria Divine Mercy blog
On the light side – perhaps – here is a video from one of the Maria Divine Mercy cult’s spin-off prophets. God is revealing the antichrist through the medium of popular music (he used sports events previously.) The Gangnam Style video is apparently a secret clue to reality.