Buell has provides factory suggested suspension setting charts based on the rider's weight for both the front and rear suspension.  I think these charts are in the owner's manual.  Here is an example:

http://a1264.g.akamai.net/7/1264/1354/bedc4f967d374c/www.buell.com/en_us/_media/pdfs/gear/suspension_settings.pdf

Does Ducati offer anything like this?  This could be really helpful.  I never know where to start when riding a bike that is new to me and often I don't have time to figure it out if I only have the bike for a short time.

I think Harley Davidson has a similar suspension adjustment settings. However, they do not use weight since the riders are mostly illiterate. They use catagories such as:

Chunky/  Hard
Lardy/ Harder
Lard Ass/ Very Hard
Lard Ass with Lard Ass female asleep on the back/ Max Hard
Drunk Lard Ass with drunk female asleep on the back/ Normal.

Just for fun with a lot of truth.