Specifying dedicated partions during install - pros/cons?

[Richard Owlett <rowlett@cloud85.net>]

During the partitioning phase of the install process, the user is given 
the option of creating dedicated partitions. I chose to do it for /home 
and swap {depending on machine I may also have a dedicated project 
partition}.

That the partition phase presents a menu of ~10 choices indicates the 
Debian team considers this an significant feature.

Where would I find a discussion of why the particular items rated 
inclusion on the menu?

TIA