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Is it supposed to have taken effect already? Because nothing has changed on my end.
1st, reduced the size of the textarea on bottom for quick replies. It was causing horizontal scrollbars, now no more2nd, I've added a think blue line between posts. For me it was just so hard to understand where a signature ended and where the next reply started! So I simply did it.
I general I'd say I agree 98% with Grandy's post above.