Procedural Knowledge Gaps
eHow is frequently accused of being a content mill. I switched search engines to DuckDuckGo when the founder announced he was dropping eHow and all other Demand Media properties from his results (Blekko has also dropped them). eHow articles are cranked out by paid writers who typically know very little about what they are writing, resulting in a lot of completely inadequate explanations. WikiHow, on the other hand, is a genuine wiki (go ahead; edit it) which rivals Wikipedia for process-oriented queries.