I always advise my clients to include a picture on their blog or website. This is a way to let your readers get a sense of who you are as well as let them know you’re a real person.
Here’s an alternative. What about a caricature of you?
Iconize Me! is a site where you submit a photo to one of three artists and get a caricature back that you can use on your blog, website, buddy list, business card, etc. It’s not free but $30-$50 for a piece of artwork is a deal. You get a jpg and a pdf with the image.
If you’re looking for something a little bit different, to stand out from the crowd, this may be a good way to go.