FAST Search for SharePoint uses search scopes in a somewhat different way than SharePoint Server search. The FAST scopes are query-time only, and you can also specify rather complex search scopes using the FAST Query Language (FQL). You can use search scopes to impact ranking in queries. Let's say you want to boost certain items based on their metadata, and you only want to do that for certain queries. It is possible to create a search scope for this purpose. In the following example you will create a search scope that gives a boost of 5000 rank points for items that contains 'technology' in a managed propety 'articlegroups'. The FQL expression you use in the scope definition is:
Richard Mueller edited Revision 2. Comment: Removed (en-US) from title
Craig Lussier edited Revision 1. Comment: added en-US to tags and title