Sorry for being harsh, but there are way too many signs. We give up reading after a while too. I presume this is done to slow folks down on the gate road, as I have found many of the paragraphs they put on these signs to be not tremendously interesting or profound. Far better were the messages that could be put on one or two signs -- short and pithy quotes, and of course, funny things.
The best ones of all time were ones like "Burning man was better next year" and the note that they will soon have to burn the man on Wednesday back in 2007.
Many years ago some of my campmates went out to put up a sign saying 'Cheap V1@gra, 3:30 & M' -- in other words spamming the signs, though there was of course no camp at that address. Somebody with no sense of humour quickly took it down.
See giant panoramas of BRC: http://www.templetons.com/brad/burn