http://msdn.microsoft.com/en-us/library/cc721269.aspx
Introduction. 1
SQL Server 2008 Full-Text Search Architecture. 3
Main Components of Full-Text Search in SQL Server 2008. 5
Upgrading your Full-Text Application to SQL Server 2008. 6
Upgrading Existing Full-Text Catalogs from Previous Releases 7
Upgrading Thesaurus Content and Noise Word Lists 10
Understanding the Filter Daemon Process 10
SQL Server 2008 Full-Text Search Improvements. 12
New Functionality. 12
Introducing Stoplists 12
Thesaurus Improvements 14
Maintaining Thesaurus Content 14
Thesaurus Algorithm Characteristics 15
New Tools for Troubleshooting SQL Server 2008 Full-Text Search. 17
Access to the Full-Text Index Content 17
The Full-Text Parser 20
A New Word Breaker Family. 3
Performance Improvements 5
Indexing. 5
Querying. 5
Mixed Query Scenarios 6
Query Parallelism.. 9
Integer Full-Text Keys 9
Breaking Changes. 9
Implementing Full-Text Search: Best Practices. 12
Manageability and Security. 12
Indexing and Full Population Performance. 12
Recommended Steps Prior to a Full Population. 13
Troubleshooting Full Population Performance Issues 13
Query Performance. 15
Increasing Full-Text Query Performance. 15
Application Development Aspects 20
Supporting Aspects 22
Conclusion. 24