Some definitions:

A/B Testing - Comparing two different versions of webpage by sending traffic to both and comparing metrics like click-throughs and conversions.

Bounce rate - percentage of web page which leave without clicking on any other pages or links

Clickthrough - When a person clicks an element on a site.

Conversion - completion of specified action. Buying something, signing up for more information or for a newsletter, calling a number, downloading something could all be considered conversions.

Cost per action - Where the advertiser pays on the basis of the desired action such as a sale.

CPM - Cost per thousand impressions (the M is Latin) Any form of advertising where the advertiser pays by the number of impressions, or views of the advert, rather than the number of clicks generated.

Crowdsourcing - Having a task traditionally form by someone inside an organization and outsourcing it to an undefined large group of people, often using the web to manage the process. An example is MyFootball club, an English soccer team owned by 50,000 members who vote on composition of the team and other management tasks, over the web. Link.

Digital Marketing - We use this term to encompass search marketing, display/banner advertising, social media on the web and mobile advertising.

Everflux - the almost daily updating of the Google search engine index

Geo-targeting - Targeting display or search advertising to a particular town, or region anywhere in the world.

Impression - one instance of displaying an online advert

Keywords - the words typed into a search engine. Also the words a search engine uses to classify a site.

Landing page - any page a vistor arrives on from a search engine or outside link. Home pages were most often landing pages, but search has changed this by sending visitors to different parts of websites.

Live-streaming - A live video feed over a website.

Long-tail - A somewhat over used word, meant to describe the tail of a graph showing how there are a large number of people interested in lots of small niches which are made into a viable market by the Internet. The huge selection of books on Amazon is an example of the long-tail.

Mash-up - a site or feature which incorporates another site e.g. housing map combining google maps and craigslist

Networking site - Any site which allows members to have a profile and link to other's profiles. Can be social, professionally, or based on interest. Can be very big - Myspace has 53 million members - or a niche such as the Texas Bar Association.

Podcast - has come to refer to any audio online which is a show.

PPC - Pay Per Click refers to any online advertisement where the advertiser pays only if the ad is clicked on, not by the number of times the advert is displayed (in contrast to Cost per Thousand impressions) . These ads can be on search engines, on regular websites or mobile , and can be text, image, video.

PPC management - The on-going monitoring, updating testing and new advertisements and keyword variations of search marketing campaigns.

Rich Media - interactive (as opposed to animation) web technology on advertisements. Rich Media Ads often allow a visitor on a website to interact with the ad without leaving the site.

RSS - Stands for Real Simple Syndication. A button on websites which allows a user to have the content of the site, and any updates, sent to a 'reader' or another website.

Search marketing on content - Showing text, image or video ads on keyword targeted websites. For example, showing adverts a travel destination on a travel website.

SERP - Search Engine Results Page. The page you see after typing some keywords into a search engine.

Social book marking - a site which aggregates member's web site address bookmarks. These can be useful for driving traffic. Examples are Redit, Digg and many others

Social Media - Online social communities, networks, information sharing and interaction. Includes user-generated content and how this is distributed.

Spam - Any attempts to sell or promote a product in an inappropriate and unwelcome way via email, linking, comments or websites or other medium.

Tagging - Labelling files, images or any element to make it easier to sort. Usually done by users.

Web Analytics – quantitative information and metrics such as click-through-rate and conversions used to measure the traffic of a website

Widget- A small graphical box on a website which shows information from another site. For example, the Weather channel has widget you can place on your website which displays the temperate in your area.

Wiki - Any webapge which allows a visitor to edit, add to or change parts of the text on a page. E.g. wikipedia.

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