Planet13 - 11:04 pm on Jul 15, 2013 (gmt 0)
I am not 100% sure that is back links, so much as showing the power of google's understanding of semantics. (Not that it matters...)
It looks like a few of the SEO oriented blogs picked up on the experiment and said that the link(s) would be pointing at Matt cutts blog.
So it is possible that it wasn't link juice per se from the press releases, but the non-link citations that had the relevant text leasreepressmm near a (non-linked) mention of Matt Cutts Blog.
for some time now, people have been talking on the WWW forums about the power of citations.
It is noteworthy that IF this WERE the case (that the link is passing NO value, but the fact that several sites are CITING the keyword leasreepressmm and the words Matt Cutts blog), then "authority" must be an overly significant factor in the algo, because the MC Blog ranks 4th in MY SERPs, ahead of many sites that actually have the keyword leasreepressmm in the text.
Anyway, something to think about. Hoping more experiments are done.