I have been using Nokia e61i (Symbian S60 3rd edition) for quite some time now. I am happy with it mostly because of the following applications. They are free and they enhance the functionality of my mobile.

Enter Yahoo BOSS, a service overcomes most limitations of Google Custom Search. It lets you display search results in the format you like, or add image thumbnails to your results page (similar to Cuil) or you can even hide certain web pages from appearing in search results.