As you know AdSense for search boxes as used by @proxy script will be retired by Google on 15 February 2011.
Yesterday, I have implemented the new Custom Search Engine (CSE) on my proxy lists including proxynet.org.
Before there had been two search options (local or entire web). Now I let users search for the entire web only to avoid two buttons.
When checking my Adsense earnings today I was positively surprised :smile:
