http://www.customsigngenerator.com - On this site you can create many graphics and clipart images to use on your blog or website. You do not need any software, just select a design template (perhaps a button maker, cartoon stripper, logo designer, etc) and fill in the blanks to personalize your images. You can also take a photograph of a person holding a sign (or a church building signage) and switch around the letters (edit the text directly in the photo). This could be fun to send fake ecards to friends or use the site to design serious web graphics.