What does the little image with W3C in the lower right of many pages mean?
This means that I have submitted this page to the World Wide Web Consortium and it has been approved as complying with the XHTML 1.1 standard. If you have web pages, you may also check them for compliance. Just click on any of my W3C images, and you will be taken to the W3C validation web site. You simply type the URI of your web page and you will find out what HTML errors you have committed. If your page passes, then you may proudly display the W3C logo.