I decided that it’s been long overdue for us to do a comprehensive review of all the major blog search engines. Several planets aligned that made me decide this was the time.
1) The ongoing effort on the behalf of clients to feed our sentiment tagging engine with complete and accurate content as it appears. For our band monitoring projects it’s search results that get analyzed for sentiment, so we want to capture all the posts that matter.
2) To make sure we’re prepared for our big CES blogger bash, we need to identify all the bloggers who work the consumer electronics beat.
3) Splogs are threatening the social media ecosystem, and I am curious as to which engines are managing the problem well (or not so well.)
4) I just wanted to see how the MacBook Air stacks up against the new HP Voodoo Envy.
So far, 5 engines have been analyzed for the results the provide. More are being added.
We’ve categorized the results as mostly either “original content” (the good stuff) or “splogs” (the bad stuff) with a few other categories we’ll describe in a later post.
At this stage, let’s look at just the results deemed to be original content. See the graphic below. On the left you can see we have dozens of individual sites deemed “good” and what engines displayed them when I searched using HP Voodoo Envy along with Macbook Air terms.

Engadget content was captured only by Digg and Technorati, while Gear Live was captured only by Digg, FriendFeed, and Twitter.
Some quick conclusions can be reached here. One interesting one is that Technorati captured the greatest number of relevant posts. Note that since they offer the option to filter by authority, I took advantage of that and sought only sites with “a lot of authority.”
The big conclusion is for complete brand monitoring you can’t get away with using one engine alone. Even two won’t likely cut it. A bunch of sites were presented by Technorati that Google missed and vice versa. FriendFeed captured links that Technorati and Google both missed etc.
More to come…