For the past four or five years, I have frequented another message board that effectively enforces signature image guidelines. I haven't seen it done better anywhere else, and since the permissibility of signature images is a relatively new development here, I'm going to share the details. The specific restrictions that I'm about to provide are posted out in the open for all to see (through the use of an announcement thread that spans all of the forums). Signatures Limitations Text signatures may not exceed a font size of more than 12 pixels or points. Text signatures may not exceed more than 4 lines of text with or without an image. Text may not "wrap" around more than one line. Use your "ENTER" key to create a line break. Image signatures must not exceed 100 KB, may only be in .jpg, .png, or .gif format, and must not exceed 250 pixels high by 500 pixels wide [that is too big, in my opinion]. Image signatures may not contain any pornography. You are not allowed to use multiple images in your signature. Signatures may not contain cheat site links or material, links to warez sites or files, or links to anything pornographic. Additionally: A) If you post the same lines / images over and over, in your posts, in an attempt to circumvent the signature rules, such posting will automatically be considered part of your signature, and you will be dealt with accordingly. B) With regards to text, your lines of text may not exceed a total of 4 lines, when it is viewed using Internet Explorer, standard size fonts, at a resolution of 1024x768. Blank lines between lines of text DO count towards this 4 lines limit. C) With regards to images, when someone clicks on signature image, and selects "Properties," using Internet Explorer 6.01, the image MUST report a size. If your image was replaced with a message telling you this, then you should change signature hosts. D) Animated .gif files are certainly permitted, as long as the image conforms to all of the above limitations as well. Therefore, your TOTAL size is limited to 100 kilobytes, in addition to the boundary restrictions, etc. E) Pictures of fecal matter, sexually transmitted fluids, etc. are not permitted. F) You may only use .jpg, .gif, or .png files as signature images. Any other format used is a violation of the rules. G) Signatures may not contain flames against other posters. Those are the rescritions, and I highly recommend them. They are enforced in the following way: When a moderator notices that a user is not following the guidelines, he or she edits the violator's signature to conform to the guidelines by replacing it with a warning. If the violator breaks the guidelines again, then they get their ability to use signatures revoked. It's really not a big deal, and it works very well. What do you think?