C

Cache
Call to Action
CAN-SPAM
Captcha
Carnival
Chromakey
Chrome
Chron Job
Click Fraud
ClickTale
Clickbank
Cloaking
Cloud
Code Interpreter
Comment Spam
Commission
Confidence Interval
Content
Content Management
Content Management System
Control
Conversion
Conversion Tracking
Co-Registration
Cookie
Copy
Copyleft
Copyright
Copywriting
Cost Per Action
Cost Per Click
CPA
CPA Networks
CPanel
CPC
CPM
Crawl
Crawler
Cross Sell
CSS
CTR
Cyber-Squatting