With the latest release of google on its toolbar addition stumbleupon like dice, the question lies, will it surpass stumbleupon? This little dice can also be used or put into your personalized page under google.

On their post on searching without query at their blog,

The first is a recommendations button on the Google Toolbar that looks like a pair of dice. Click on the dice, and we’ll take you to a site that may be interesting to you based on your past searches. If you want another, just click the dice again and we’ll show you a new one. We’ll give you up to 50 new sites per day that might be of interest. Just add the button to your Toolbar. (In order to use this feature, you need the latest version of the Toolbar.)

Addition to the competition, well it is always better to have a competition than a monopoly.