Mashup: Gawker Stalker

GawkerStalker is a mashup between Google Maps and people's sightings of celebrities.

The useful web: Walk it

Walkit.com is a lovely little site that encourages people to walk more.
It produces a map to get you to your destination as well as information about how long it will take you, how many calories you'll use and how much CO2 you'll avoid.

Mashup: Trippermap

Trippermap.com is a "web service that allows you to put a flash based world map on your own website or blog. Trippermap will then automatically search your photos at Flickr for location information and plot the photos on your own Trippermap, on your own website."

Mashup: News Map

Newsmap visually demonstrates the ever changing landscape of Google News (a news aggregator.)

Newsmap: "It divides information into quickly recognizable bands which, when presented together, reveal underlying patterns in news reporting across cultures and within news segments in constant change around the globe."

Mashups

Mashups is a phrase for something that has used an existing popular web tool (such as Google APIs or Flickr APIS ) and combined it with another level of functionalilty (e.g. adding an estate agent service to Google Maps).

The Wikipedia explanation: A mashup is a website or application that combines content from more than one source into an integrated experience.

Find out How to create a Mashup
Discover the principles for making a good Mashup

Digg

Digg is a site that acts as a filter for the mass of web content. It allows people to submit interesting things that they've found online, the content is then rated by the Digg community, allowing the most popular content to surface to the home page. Essentially, it's about harnessing the power of communities to edit the enws.

Del.icio.us

Del.icio.us is a system for storing links and then sharing them. It was created by a Joshua Schactter, who was working as an analyst on Wall Street. He also wrote a blog in his spare time. In order to keep on top of all the links that he got sent, he created a database in which to store them. He made this database accessable by a web page and allowed links to be tagged to make everything super findable.