If you use Firefox then try this site. Nothing special, just that the pink cross will start spinning. Firefox can display animated gifs as favicons. Yes, there is no point to this. Now, the good news is, that once more people start cluttering a simple information system like a favicon, there will be an extension for Firefox to make them stop twitching if you so desire.
A favicon is a one-look information confirmation. It helps you to get very very quickly where you are. When it starts moving it does not at to this functionality. It actually breaks the purpose of those sixteen by sixteen pixels: First of all it’s distracting. Something moving is a visual cue. We are evelotunary trained to look at moving things: If it moves then we might want to eat or fuck it, or it might want to do the same to us. No, favicons probably don’t. But our visual perception system does not know that. So we look at it.
But there is nothing to see. Which is the second problem of this juvenile Firefox feature: What’s the point? You can not really make a meaningful animation at this size. Animation can help the meaning of signs. An arrow symbol can be suported if it moves. An animated favicon is like a moving letter. There is a reason why animated type is not the default setting, even though computers could jiggle letters around at ease. It’s annoying, distracting and simply pointless.
Which is the third and final problem of those 256 pixels playing quick chameleon: if you need eye candy like this, then you might be a little bit insecure if the actual content and your site is worth remembering. It’s the equivalent of a loud dress. It’s fad, and it will come and go. Dancing Baby, moving icon. Seen that. Ignored that.