Came across some advanced search features of twitter in which you can put :) on the end and it will only find searches that it deems are positive.

The whole concept is called sentiment analysis. The attached article breaks down how the idea works really nicely.

If your not looking to do it in Phython here's a few js frameworks;

- Sentimental

- Knwl

and the advanced search stuff on twitter can be found here.

If your just looking for pure evil, stick a :( on the end of your twitter searches... or attach this to Google and Google to a awesomo robot and we're all doomed.