botnet are easy to make
first of all i don't understand you... secondable there's tons of tutorials on how to make botnets.. and spread them. if somebody has any question about botnets i'll give you the link for a tutorial so you can make them yourself. (easy to make)
skype uses encryption.
skype uses encryption whereas google keeps your information logs... for voice and searches when searching for something illegal try to use Scroogle.com they keep your log searches for 48 hrs.