C

Cache
Call to Action
CAN-SPAM
Captcha
Carnival
Chromakey
Chrome
Chron Job
Click Fraud
ClickTale
Clickbank
Cloaking
Cloud
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