Folks,
In all honesty,
http://clickmojo.com does have its usefulness and
http://fallendomains.com has not encroached on the key features of his site. I do feel the price is a bit steep for it, however that is a personal opinion. Both sites used together properly could be the deciding factor in getting your perfect domain or a number of them. The fact is both sites have a different slant and you can find use in either or both.