Google recently released a new product called Google Notebook. The functionality is much like a personal wiki of things you find interesting on the net. You can easily put anything on a web page into one or more notebooks. This includes links, bits of text and even images!
For me, this is one of the more useful applications that Google has released because I'm constantly feeling a bit overloaded by information. It really has become too difficult (and unnecessary) to remember everything I come across on a daily basis. A native client for my iPhone would be great, but for now, I can get at the information in Safari.