Internet Marketing Terms

SEO: Search Engine Optimization

SEM: Search Engine Marketing

PPC: Pay Per Click

ROI: Return On Investment

CPC: Cost Per Click

CPA: Cost Per Action

CPM: Cost Per Thousand Impressions

CPS: Cost Per Sale

CTR: Click Through Rate

SEP: Search Engine Positioning

Affiliate Marketing: Revenue sharing between online advertisers/merchants and online publishers/sales people; compensation is based on performance typically in the form of sales, clicks, registrations, or a hybrid of the three.