cferto - 2:22 am on Jul 9, 2013 (gmt 0)
Thanks Phranque, thanks Planet13!
I watched the video. John is not talking specifically about domain merge, but he says that redirecting 301 all urls into one page is the same as 404. Googles tries to identify this and it will not pass link juice.
This is exactly what I am currently doing. I will fix this and let you know what happens.