There are a few services out there that allow you to make your own postage stamps and here’s a new one from Yahoo! In a few simple steps you’ll be configuring your stamps online with our simple customization tool. In days, you’ll receive your stamps in the mail, ready for use! All you need is a Yahoo! Photos account. I’ll eventually try this out once they allow you to use Flickr photos, I really want a LM555 timer chip stamp to send to friends, or other geeky stamps. [via] Link.