From DeveloperWiki

[edit] Currency converter

Insert this query in the google's search box

input:
100 USD in GBP

Result:
100 U.S. dollars = 54.2564158 British pounds

[edit] Definitions

Example(s)

Input:
define:wiki

Result:
a Wiki is a type of website that allows the visitors to add, remove, and sometimes edit the available content. ...