Splogs Decreasing Signal to Noise Ratio

One of the things we do when checking out a potential client is plug their brands into Technorati, IceRocket, Feedster and a couple other blog search engines to get an informal gauge on how folks are reacting to the product/client/category. A good number of these searches are valuable in terms of getting unfiltered opinions. But an overwhelming majority are links to splogs and auto-reposted material on valueless blogs. If we don't find a way to self-monitor, it won't be long before splogs make the signal to noise ratio unacceptable and folks abandon blog search engines. A democratic approach to what gets listed in a search database would help.