If you like Google’s Chrome (aka Chromium) browser but don’t like Google’s privacy policies associated with it, give SRWare’s Iron a try.  SRWare’s Iron is based on Chromium source, so you can use it as you would Google’s own browser.  With Iron, extensions and themes work just as they would in Chrome.  There are Mac, Linux, and Windows versions available for downloading.  Go to SRWare’s web site to try it out.