Definitions: C

What is Cache Busting?
Cache busting is preventing browsers or proxy servers from serving content from their cache, in order to force the browser or proxy server to fetch a fresh copy for each user request. It is used to provide a more accurate count of the number of requests from users.
What is a Cache?
Cache (also known as caching) is a place to store something temporarily for quicker access at a later date. Typically, Web pages are stored in a browser's cache directory on a hard disk, or on a local proxy server.
What is CC?
CC (Carbon Copy) is where you insert email addresses into the CC field of an outgoing email to send an email to one or more recipients.
What is CGI?
CGI (Common Gateway Interface) is a standard way for a Web server to pass a Web user's request to an application program and to receive data back to forward to the user. CGI is commonly used to process online forms.
What is a CGI script?
A CGI script is a software program commonly used to handle forms, database search queries on Web pages, and to produce dynamic Web page content.
What is a Chargeback?
A chargeback is a transaction debited to a merchant's account usually as a result of a cardholder dispute.
What is a Chat Room?
A chat room is place for Web users with a common interest to communicate in real-time.
What is Clearing?
Clearing is the process of managing the details between an acquirer and an issuer to allow posting of a cardholder's account and reconciliation of a merchant's settlement position.
What is a Click Stream?
A click stream is the recorded path of the pages a user visited as they surfed one or more Web sites.
What is a Click-through/Click?
A click-through or click is when a Web user clicks on an advertising banner or text ad and lands on the sponsor's Web page. 'Click-through' is the more popular term.
What is a Client?
A client is a program, such as a Web browser, that requests the services of another computer. A Web browser makes requests for pages from servers all over the Web.
What is Clip Art?
Clip art is prepared artwork designed for use in Web pages by experts and novices alike.
What is Cloaking?
Cloaking is the practice of serving search engine optimized pages to search engine spiders, while at the same time serving regular pages to site visitors.
What is Clustering/Clustered results?
Clustering is a technique used by search engines to 'cluster' search results together, when they find multiple results from the same Web site. Usually, the most relevant result is listed first with the other relevant pages from that same site indented below it. This makes search results clearer and more useful to searchers, by preventing a small number of sites occupying all of the top rankings.
What is a CMS?
A CMS (Content Management System) is a system used to manage the content of a Web site. Typically, a CMS consists of two elements; the content management application (CMA) and the content delivery application (CDA).
What is a CNAME?
A CNAME (canonical domain name) is a sub-set (prefixes as it were) of your main domain name which point to the same place. For example, and
What is Co-Branding?
Co-branding is when two Web sites display their logos, and thus their brands, together so that the Web user considers the site or section to be a joint venture.
What is Colocation/Co-location/Collocation?
Colocation (also known as co-location and collocation) is the provision of space for a customer's own computer server in the the Internet service provider's premises.
What is a Comment Tag?
A comment tag is used by Web designers to add comments (<!-- comment -->) to a Web page and also to hide JavaScript code from non-compliant Web browsers.
What is Conversion Rate?
Conversion rate is the percentage of people who take a desired action (click, register, subscribe, buy, etc.).
What is a Cookie?
A cookies is a small information text file that a Web site stores on your hard disk so that it can remember something about you at a later time. Typically, a cookie records your preferences when using a particular site.
What is a Cookie Buster?
A cookie buster is software that blocks cookies from being placed on a user’s browser.
What is CPA?
CPA (Cost-Per-Action) is the cost to an advertiser for each visitor that takes some specifically defined action in response to an ad beyond, such as subscribing to a newsletter.
What is CPC?
CPC (Cost-Per-Click) is the cost to an advertiser for each click through of an ad generated by a site visitor.
What is CPL?
CPL (Cost-Per-Lead) is the cost to an advertiser for each lead generated by an affiliate.
What is CPM?
CPM (Cost-Per-thousand) is the cost to an advertiser for one thousand ad impressions. 'M' is taken from the Roman numeral for a thousand.
What is CPO?
CPO (Cost-Per-Order) is the cost of advertising based on the number of orders received.
What is CPS?
CPS (Cost-Per-Sale) is the cost, in terms of a commission payment, to an advertiser for each sale generated by an affiliate.
What is CPT?
CPT (Cost-Per-Transaction) is the cost of advertising based on the number of transactions received.
What are Creatives?
Creatives are banner ads, copy, active URLs and other forms of creative artwork which are due to the ad seller prior to the initiation of an ad campaign.
What is CRM?
CRM (Customer Relationship Management) is the management of customer relationships to increasing brand loyalty.
What is CRON?
CRON is a list of one or more commands to a computer operating system or application server that are to be executed (processed) at a specified time.
What is CSS?
CSS (Cascading Style Sheets) defines how to display HTML elements in a Web page.
What is CTR?
CTR (Click-Through Rate or Ratio) is the percentage of ad impressions that resulted in click throughs.
What is Customer Acquisition Cost?
Customer acquisition cost is the cost of acquiring a new customer.
What is a Cybercafe?
A cybercafe is an establishment, usually a coffee shop, which offers Internet access to the public.