OAuthProxy (OAuthify) is a web service that performs two legged OAuth requests given the consumer key, consumer secret and parameters of the backend webservice. Right now it can run any two legged OAuth YQL Query.
For more information on OAuth go to http://oauth.net
You can find more detailed information on this service here
To get started with YQL you can get a Consumer Key and Secret at http://developer.yahoo.com/dashboard/
Option 1: Provide your Consumer Key and Secret. OAuthify signs the request and performs a query. Also see Option 2 below.
Option 2:The second option requires you to register the consumer key and secret with OAuthify and in return you get an AppId from the webapp. You provide the OAuthify AppId to the service below and you can execute the YQL query without having to worry about exposing your consumer key and secret.
The registration page also provides a very useful feature of regenerating your OAuthify AppId, in case you think it's been exposed or fallen into the wrong hands. All this without changing the underlying Consumer Key or Consumer Secret. So you get a new appId which relies on the same underlying Consumer Key and Secret.