A lot of GoGameGuru content can be found via web.archive.org as @stone.defender mentioned. You have to jump back a couple of years, since the more recent snapshots capture a fake website set up by spammers.
For example, I was able to recover their coverage of the famous Lee Sedol vs Gu Li jubango in this post:
Also, GoGameGuru released some of their content (go problems and some of their game review SGFs) on GitHub under a Creative Commons license:
Which I cataloged in a listing of go content in the Creative Commons: