I'm not impressed with Fast. Even the advanced search has poor results. Example: searched for the domain of a popular site, and it showed no pages indexed. Then did a keyword search of the company name, and it came up #1. However, the search showed no pages were supposed to be indexed. Another example: link.all:mysite.net only show 10 links. Google currently shows 24, and the new Google update should show around a 100. I could go on, but I think there's a lot of bugs in their algo and other stuff.