I don't think we want threads being taken up with long text signatures either. There are tight restrictions on the dimensions (not just the file size) of signature pictures; if you have a 20-line poem as your signature, it will take up much more room than a picture 150 pixels in height. I suppose there could be a line restriction on signatures, but that would work against the use of longer poems, no?
I currently have signatures on, as I have a fast connection, and I like to see them. But if they start to take up more vertical room than the posts themselves, then more people like myself will feel compelled to turn them off, which would be a shame.
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