Web 2.0
Web2.0 refers to the new generation of web based services and communities characterised by participation, collaboration and sharing of information among users online.

Weblog 
A weblog, or blog is an online journal. Weblogs are typically made up of posts, images, videos, comments and links. Popular blogging platforms include: Blogger, Wordpress, Typepad, LiveJournal and Dreamhost

Web Browser 
Software installed on a computer to allow users to view web pages. Popular web browsers include Microsoft Internet Explorer, Firefox, Safari and Opera.

Web Crawler 
Also known as a 'web robot' or 'web spider', it is a program or automated script which browses the World Wide Web in a methodical, automated manner.

Web Standards 
Web standards are widely adopted guidelines for CSS, HTML, and XHTML etc. Web standards ensure web sites are accessible on a variety of platforms and to a large range of users.

White Hat
SEO techniques, which conform to best practice guidelines, and do not attempt to manipulate or trick search engine results.

White Hat SEO
Optimizing a website using only techniques outlined in search engine guidelines.

Widget (gadget, gizmo)
Small applications used on web pages to provide specific functions such as a hit counter or IP address display. These programs can make good link bait.

Wordpress 
An open source web publishing system or content management system created primarily as blogging software.