A simple hit-a-hint extension
Yet Another Hints Extension allows you to click elements without using your mouse. Pressing Ctrl+m generates hints for each clickable element in the current view. Each hint has a character code. When you type a code, a hint gets highlighted, and you can "click" the corresponding element by pressing the return key. You can also add ctrl, shift, alt and meta modifiers when you press return to simulate ctrl+click and so on.
About permissions: the extension requires access to every page you use the extension in. All this extension does is generates hint elements based on existing elements in page. There is no logging or any other shady business.
You can customize the keybinding and hint characters in the extension's options page.
If you want to contribute by reporting bugs, writing documentation or submitting patches, check out the extension's Github page: https://github.com/Lepovirta/yahe