I read the post, he said he made up that technique, didn't he? I don't think it would be a realible post. But thats just my opinion..
But lets say it does work.. He mentioned he has the answers to ''all of life's questions''. That would mean past, present and future.
If your important question was about the future, you should know that the future can be changed once you're aware of it. Therefore, your answer would be different.
If your question was not from the future, then I'd say it's one of the more reasons I don't think its a reliable post.
It's up to you~