The last year, many people have asked me what exactly the Sharepoint Topic Assistant is. Although it is clear what it is and what it does, I was never able to give an exact answer to all the questions. Until I found the following article about 'Using the Topic Asisstant in Sharepoint Portal Server 2003'.
http://www.microsoft.com/technet/prodtechnol/office/sps2003/maintain/sst15.mspx