Pick the image you want to use, right click on it and choose "Save image as..." (or the corresponding action in your browser). Upload the image to your own image host or website and include a link back to http://betterifyoudo.inxplicable.org/.

50x50

75x50

88x31

100x35

100x50

Of course, you're welcome to make your own buttons/codes too! If you want to offer them for other people to use, send them to JenR and make sure you indicate how you'd like to be credited (name, email or website link, etc.). They'll be added to this page.