Intelliseek will offer enhanced pay services once the final release hits the market, but it's quick to add that ProFusion's free capabilities today will remain so tomorrow. In addition to the ProFusion service, Intelliseek also sells industrial-strength search engines to corporate customers, a group to whom database searching really matters. Intelliseek also sells two client-based search tools under the BullsEye name. If you're a power searcher, you'd do well to look at them. There's a demo version available for download.
Search engines are a matter of personal preference and convenience.
So some of you will like Profusion. It works well. I tried my own experiment.