SEO Glossary – C

Cache
Copies of web pages stored locally on an Internet user’s hard drive or within a search engine’s database. A cache is the reason why web pages load so quickly when a user hits the Back button in their web browser, since the page is not being redownloaded off of the Internet. Google is unusual among search engines in that it allows Internet users to view the cached version of web pages in its index. Simply click on the word “Cache” next to the search result of interest and you will be taken to a copy of the page as Googlebot discovered and indexed it.

Call To Action
A call to action is copy used in advertising to encourage a person to complete an action as defined by the advertiser. Call to action words are “doing words” such as “Click here”, “Buy Now”, “Enter Now” or “Click to download”.

Cgi-bin
Cgi-bin is a “virtual” directory contained in URLs indicates a CGI (Common Gateway Interface) script is in use. A sure tip-off to the spider that your page is dynamic.

Click Fraud
Click Fraud is the illegal practice of manipulating Cost-Per-Click (CPC) or Pay-Per-Click (PPC) revenue sharing agreements. There are numerous types of click fraud, but in a typical scenario the webmaster of a site that earns money from each click of the advertising links it publishes pays individuals a small fee to click those links. Companies thus pay for advertising to clients who had no intention of buying from them. Some companies have filed class action lawsuits alleging that ad publishers such as Google and Yahoo! have failed to aggressively confront click fraud because they benefit from increased CPC revenue.

Click-Through
Click-through refers to a single instance of a user clicking on an advertising link or site listing and moving to a Landing Page. A higher Click-Through Rate (CTR) is one of the primary goals of Search Engine Optimization.

Click-Through Rate (CTR)
Click-through Rate is the percentage of users who click on an advertising link or search engine site listing out of the total number of people who see it, i.e. four click-throughs out of ten views is a 40% CTR.

Cloaking
Cloaking is the presentation of alternative pages to a search engine Spider so that it will record different content for a URL than what a human browser would see. Cloaking is typically done to achieve a higher search engine position or to trick users into visiting a site. In such cases cloaking is considered to be Black Hat SEO and the offending URL could be Blacklisted. However, cloaking is sometimes used to deliver personalized content based on a browser’s IP address and/or user-agent HTTP header. Such cloaking should only be practiced with a search engine’s knowledge or it could be construed as black hat cloaking.

Contextual Link Inventory (CLI)
Search engines/advertising networks use their contextual link inventory to match keyword-relevant text-link advertising with site content. CLI is generated based on listings of website pages with content that the ad-server deems a relevant keyword match. Ad networks further refine CLI relevancy by monitoring the Click-Through Rate of the displayed ads.

Content Integration
Advertising woven into editorial content or placed in a special context on the page, typically appearing on portals and large destination sites. Also known as web advertorial or sponsored content.

Conversion
Conversion is the term used for any significant action a user takes while visiting a site, i.e. making a purchase, requesting information, or registering for an account.

Conversion Analytics
Conversion analytics is a branch of Analytics concerned specifically with conversion-related information from organic and paid search engine traffic, such as the keywords converts used in their queries, the type of conversion that resulted, landing page paths, search engine used, etc.

Conversion Rate
Conversion rate is the next step up from Click-Through Rate. It’s the percentage of all site visitors who “convert” (make a purchase, register, request information, etc.). If three users buy products and one user requests a catalogue out of ten daily visitors, a site’s conversion rate is 40%.

Cookie
Information placed on a visitor’s computer by a web server. While the web site is being accessed, data in the visitor’s cookie file can be stored or retrieved. Mostly cookies are used as unique identifiers (i.e. user IDs or session IDs) to isolate a visitor’s movements from others’ during that visit and subsequent visits. Other data that may get stored in a cookie include an order number, email address, referring advertiser, etc.

Cost-Per-Action (CPA)
In a cost-per-action advertising revenue system, advertisers are charged a Conversion-based fee, i.e. each time a user buys a product, opens an account, or requests a free trial. CPA is also known as cost-per-acquisition, though the term cost-per-acquisition can be confusing because it also refers to a return on investment model.

Cost-Per-Click (CPC)
Also known as pay-per-click or pay-for-performance, cost-per-click is an advertising revenue system used by search engines and ad networks in which advertising companies pay an agreed amount for each click of their ads. This Click-Through Rate-based payment structure is considered by some advertisers to be more cost-effective than the Cost-Per-Thousand payment structure, but it can at times lead to Click Fraud.

Cost Per Lead (CPL)
Pricing based on the number of new leads generated. For example, people who click from an ad and then complete an inquiry form is considered to be a lead. The advertiser would pay based on the number leads received.

Cost-Per-Thousand (CPM)
Also known as cost-per-impression or CPM for cost-per-mille (mille is the Latin word for thousand), cost-per-thousand is an advertising revenue system used by search engines and ad networks in which advertising companies pay an agreed amount for every 1,000 users who see their ads, regardless of whether a click-through or conversion is achieved. CPM is typically used for Banner Ad sales, while Cost-Per-Click is typically used for text link advertising.

Cost Per Sale (CPS)
Pricing based on the number of sales transactions your ad generates. Since users may visit your site several times before making a purchase, you can use cookies to track their visits from your landing page to the actual online sale. Also known as cost-per-acquisition or pay-per-sale.

Crawler
Also known as Spider or Robot, a crawler is a search engine program that “crawls” the web, collecting data, following links, making copies of new and updated sites, and storing URLs in the search engine’s Index. This allows search engines to provide faster and more up-to-date listings.

Leave a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.