A WebmasterWorld thread has discussion around how Google seems to consider any web site that contains an RSS feed, as a blog. In fact, several webmasters are complaining that their web sites are showing in the Google Universal Results, under the label of, "blog posts about," when their site is simply not a blog.
What seems to be happening is that Google may be considering any site that has an RSS feed as a blog. Many sites have RSS feeds these days, including Apple.com that has autodiscovery set up to their hot news headlines feed and even my site, RustyBrick.com that has our autodiscovery set up to our news section (which I really need to update).
It does appear that Google may classify www.rustybrick.com as a blog by listing our results in blog search, but it does not list apple.com in blog search. It does list many sites with RSS feeds, no matter if they are a blog or not, in blog search.
So does Google have a problem misclassifying blogs based on the RSS feed availability? Should webmasters be upset if their sites are included in Google Blog Search? Can it hurt?
Forum discussion at WebmasterWorld.