| trackback | Trackback helps bloggers keep track of who is linking to their articles. Can be seen as a way for bloggers to communicate between their web-blogs, a kind of link notification. |
| sandbox | The Google Sandbox is an algorithm that has allegedly existed since 2004, a filter that potentially affects new websites and/or links. |
| astroturfing | No, this term does not refer to the fake grass used so frequently in sports arenas. It refers to something that is consider the opposite of full disclosure. Astroturfing is when a site is trying to advance a commercial or political agenda while attempting to be impartial in a social group. |
| cache | A technology that temporarily stores web content, such as images, to reduce future page loading times. |
| noarchive tag | A meta tag that tells search engines not to store a cached copy of your page. |
