http://www.riorey.com/company-difference.html
It's quite kind for riorey to publish their Taxonomy of DDoS Attacks. pretty nice read.
http://www.riorey.com/x-resources/2011/RioRey_Taxonomy_DDoS_Attacks_2.2_2011.pdf
This blog acts as my scratchpad, don't mind my moods. If you pay attention to them its not like they will change.