Internet marketing is the use of the Internet to advertise and sell goods and services. Internet Marketing includes pay per click advertising, banner ads, e-mail marketing, interactive advertising, search engine marketing (including search engine optimization), blog marketing, and article marketing.

Internet marketing is a component of electronic commerce. Internet marketing can include information management, public relations, customer service, and sales. Electronic commerce and Internet marketing have become popular as Internet access is becoming more widely available and used. Well over one third of consumers who have Internet access in their homes report using the Internet to make purchases. Internet marketing is also useful for companies that wish to expand their "brick-and-mortar" business into an online business.

Internet marketing first began in the early 1990s as simple, text-based websites that offered product information. Over time Internet marketing evolved into more than just selling information products, there are people now selling advertising space, software programs, business models and many more exciting products.

Advertising metrics
click-through, click-through rate (CTR), conversion rate, cost-per-click (CPC), cost-per-action (CPA), CPM, customer acquisition costs, hit, hybrid model, impressions, page view, pay per click (PPC), pay per lead (PPL), pay per sale (PPS), site stickiness, surround session, unique visitors, Web site traffic

Advertising specifications
banner ad, beyond the banner, button ad, HTML banner, interstitials, pop-up ad, pop-under ad, rectangle ad, rich media, skyscraper ad, text ad, vertical banner

Affiliate marketing
affiliate, affiliate directory, affiliate forum, affiliate fraud, affiliate marketing, affiliate merchant, affiliate network, affiliate software, exclusivity, payment threshold, return days, super affiliate, two-tier affiliate program

Business and ebusiness
application service provider, B2C, B2B, disintermediation, guerilla marketing, free, first-mover advantage, interactive agency, marketing, marketing plan, network effect

Community and etiquette
blog, forum, moderator, netiquette

Controversial marketing
ad blocking, banner blindness, buzzword, cookie, email spam, FFA, incentivized traffic, mousetrapping, opt-out, pagejacking, spam, search engine spam, trick banner

Domain names
domain name, long domain name, whois

E-mail marketing
email, email marketing, ezine, ezine directory, HTML email, opt-in email, pass-along rate, permission marketing, sig file, viral marketing

Free web site promotion
barter, banner exchange, button exchange, text link exchange, Web ring, Web site award

Linking strategy
deep linking, inbound link, link checker, outbound link, reciprocal links

Online advertising
advertising network, caching, frequency cap, house ads, keyword marketing, rate card, rep firm, run-of-site (ROS), run-of-network (RON), self-serve advertising, sponsorship, underdelivery

Search engine optimization
description tag, doorway page, doorway domain, invisible Web, keyword, keyword density, keyword research, keywords tag, link popularity, link text, log file, manual submission, meta tag generator, meta tags, pay per click search engine, search engine optimization, search engine submission, search spy, title tag, top 10, URL, volunteer directory

Search engines and directories
search engine, metasearch engine, portal, Web directory

Web design and marketing
above the fold, ad space, ALT tag, animated GIF, bookmark, cascading style sheets (CSS), favicon, Flash, frames, home page, JavaScript, linkrot, navigation, shopping cart, site search, splash page, Web browser, Web design, Web site usability