The default reddit sort functions apply to all posts you view, and that can get annoying when you are switching between the front-page and smaller, time-sensitive threads. These bookmarklets only apply the sorting to the current thread instead for everything like the dropdown on reddit does. Drag and drop them into your bookmarks bar and click on it when you are in a thread.

Very useful in game threads. Drag and drop them to your bookmark bar and use them on a thread.

reddit - sort by new
reddit - sort by top
reddit - sort by old
reddit - sort by best
reddit - sort by hot
reddit - sort by controversial