Like it or not, Cyberhomes just really hasn't caught on like some of its other contemporaries. Technically it's a very competent site and one that I've always thought was definitely under-recognized. But even I'm guilty of forgetting it's out there some days.
Part of the problem may be the disjointed approach it has taken to its product over the years. Cyberhomes has had more home page redesigns than any other site I know, but it may also just be that it has never really found a good niche to corner. Property valuations: Zillow's got them licked. Likewise Trulia with search experience, Realtor.com with depth of listings. And FrontDoor's got them beat editorially.