Behold the Battle of the Bubbles
CNET attempted to re-create the behavior on multiple accounts at different times of day, including right after the video was first posted by Gundotra, as well as later on in the afternoon. Like Facebook, we, too, found troubles attempting to re-create the problem, successfully seeing the invite links in the "most recent" section of the Facebook news feed. Users on Google+ threads by both Gundotra and Horowitz reported mixed results.
This is not the first time that Facebook's filtering algorithms have been criticized. Eli Pariser, the author of "The Filter Bubble," famously profiled how filtering on places like Google's search results, as well as Facebook's news feed, can have a big impact on what users see, potentially limiting the "bubble" of content a user sees on a daily basis. What is, perhaps, surprising is that some of the finger-pointing on this is coming from Google, which itself uses similar filtering technology on its own search results.
Google declined to offer an official statement on the matter.