As a result of the discussion on image resizing, I've created a new BBCode tag that handles image resizing for you.
If you have a picture larger than 640 pixels wide, instead of using the [img][/img] tags to add an image to a forum post, use [bigimg][/bigimg] instead. Alternatively, you can use the "Big Images" button in the Reply page.
If you don't know how wide your picture is, use the [bigimg][/bigimg] tag anyway.
This saves everyone from having to scroll horizontally and it reduces load times for pages (as the browser doesn't have to download a ginormous image).
So that everyone can still view the full-sized copy, it wraps the image around a [url][/url] tag which then opens in a new window.
Now that this tag is available, there should be no excuse for people adding ginormous images to forum posts. You have been verbally warned, and you will recieve a warning increase if you fail to use this tag.
Please direct any comments/criticisms to this thread.