> Thus, in the thread, the next message can be reached
> by pressing the "next" link. The link has an address
> on the format: 
> <http://siliconinvestor.advfn.com/go.aspx?subjectid=1>
> 8363&msgnum=1
The problem is
Buffettology - <http://siliconinvestor.advfn.com/subject.aspx?subjectid=18363>
Also contains that subject ID. And you want just the next links. try:

-* +*/go.aspx?subjectid=18363*