I use Saka Key every day to make navigating websites easier. I really use it just for clicking links with my keyboard and don't use its scrolling, zooming, history/URL navigation or tab/window management capabilities.

The more I use it the more I like it because I start to remember what letters it's going to assign the links I use most. I access links without really having to think about navigating — I just hit my hot key (which I've reassigned to backtick `) and press the letter for the link I want. Really speeds up navigating through websites!

I find it especially useful for banking / credit card / brokerage websites whose designers think that all their users love to point and click and which have a lot of confirmation dialogs or pages.