Midori is a fast and light web browser based on the Webkit layout engine.
It is developed by Christian Dywan, who happens to be a very nice guy.
 Different keyboard shortcuts
Midori mostly uses the same keyboard layout as most free web browsers. Ctrl-PgUp and Ctrl-PgDown switches tabs, ctrl-w closes a tab and so on.
But there are some differences.
First, you are NOT allowed to close the browser window easily. You have to ctrl-shift-w to close a browser window and you must ctrl-shift-q to close the entire browser. The reasons for this are unknown, but it makes it hard to make the browser go away.
Secondly, you have to learn ctrl-k (which also works in Firefox) to go directly to the search bar. The reason is that you can NOT get there by pressing ctrl-l (to go the location bar) and then tab since this, for unknown reasons, skips the search field.
 Deal-breaking missing features
Midori DOES NOT let you right-click and select the language used by the spell-checker. This means that it is basically useless for writing and contributing on the web if you are multi-lingual individual.