A tool for those using the old Reddit style

If you're using the old Reddit style, you might be interested in the Reddit Enhancement Suite (RES) plug-in. It adds several features to Reddit that I find useful, including a bar with shortcuts to format your post like this.

It also shows a preview window like this so you know what your formatting will look like before you post.

You will also be able to explode a picture from a link using an icon next to a picture link like this.

There are a number of other features that you can find in RES's features page.