I suggest that there be a limitation to the size or the height of signatures. Font size, amount of lines etc.
I've moderated on a forum once that had sig size rules and if I remember correctly there were line limitations that could be put in place on the back-end.
Even if you couldn't do much about it on the back-end perhaps some written rule for the site? I think it would be appropriate. Some of the sigs around here are ridiculous, distracting and breaks the flow of conversations. - At least I think.
I've moderated on a forum once that had sig size rules and if I remember correctly there were line limitations that could be put in place on the back-end.
Even if you couldn't do much about it on the back-end perhaps some written rule for the site? I think it would be appropriate. Some of the sigs around here are ridiculous, distracting and breaks the flow of conversations. - At least I think.