My apologies for the spamming this blog may have wrought on your feed reader (twice over, if you're subscribed to the comments feed as well). The new templates had a different idea of entries' unique ID strings than the previous ones did, probably confusing most RSS readers into displaying duplicate Gameshelf entries. I've now reset the IDs to their old patterns, and so that should be that.
Related: I purposefully chose to not import the old video-only RSS feed to this new blog. That was an artifact from back when I still considered the Gameshelf to be a video series with a supplementary blog, but all that changed last year. Little is lost: you can quite easily access all the videos we've published by visiting the Gameshelf TV category.