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Reverse Ajax, not unlike DHTML, LAMP, Ajax and SPA, is not a technology in itself, but a term that refers to the use of a group of technologies together. These technologies include:

• Ajax for handling the data on the client side in a smooth and interactive way, and passing data between server and client.
• A technology for pushing server data to a browser
  • Comet, a connection between a server and client is kept open, by slowly loading a page in a hidden frame.
  • Piggyback, extra data is added (piggybacked) onto a normal client-server interaction.
  • Polling, the client repetitively queries (poll) the server.

Reverse Ajax is different from Ajax, as Reverse Ajax is a suite of technologies for pushing data from a server to a client. These technologies are built upon an Ajax framework.

A domain hack is an unconventional domain name that combines domain labels, especially the top-level domain (TLD), to spell out the full "name" or title of the domain, making a kind of pun.

For example the second-level domain (SLD) blo.gs makes use of the TLD .gs (South Georgia and the South Sandwich Islands) to spell "blogs". The third-level domains del.icio.us and cr.yp.to make use of the SLDs icio.us and yp.to from the TLDs .us (United States) and .to (Tonga) to spell "delicious" and "crypto" respectively.

Here are some ways to use Google, Alexa, Yahoo! and Clusty to check articles and other information.

Spamming is commonly defined as the sending of unsolicited bulk e-mail - that is, email that was not asked for (unsolicited) by multiple recipients (bulk). A further common definiton of spam restricts it to unsolicited commercial e-mail, a definiton that does not consider non-commercial solicitations such as political or religious pitches, even if unsolicited, as spam.