nietzsche wrote: I'm sorry, until phpbb comes up with a way to do it without having to save the sigs and it's easy to do it (2-3 minutes) it won't happen.
there is a way to limit sig size with the use of a phpBB add-on.
here it is: http://www.phpbbsmith.com/projects/phpbb3/signature-restrictions.html
i've told the admins about this and it was dismissed because apparently they don't want to get complicated with add-ons and stuff like that.
It's because it's a one-guy operation.
If there was a boss, he would simply tell the programmers to implement something, because it's a good idea. But lack doesn't think in terms of good idea/bad idea anymore, he think's in terms of what he can do easily. He is the boss, and he tells himself to do only things he's comfortable doing.
The YouTube tag, I was bugging and bugging, show them the code and finally they did it, and to be honest it's because having Youtube embedded looks very cool. But I also show them the code for the "Like" option but it was more work and I bet he doesn't want to do it because it will take him longer, like 1 day.
So we gotta make a big deal of the Signature file size for it to be implemented. And I agree with OP, some animated signatures make the threads very difficult to read, lately PS' signatures, but there have been others. What I do is I use adblock to hide em.
The easiest solution I bet would be to allow only jpgs and pngs as signatures. No gifs, but this is not ideal because some animated signatures are not as heavy on the browser. I have a fairly fast computer, but I have 2 or 3 browsers open at a time, and each with more than 5 tabs open, so to scroll down on threads filled with this type of signatures it's noticeable.