> If it links to just a directory 
> (which will then have a default index.html appear) such as
> <http://mynews.com/today/SomeBreakingHeadline/>
> Then httrack doesn't mirror it.
> How can I fix it? would adding '+*/' to the filter part 
> clear it up?
+*/*/*[]

should do the trick.
(or
+*/*[] 
which will also accept <http://www.foobar.com/>)