This infographic needs no explanation, no kind words, no hype. It is simply perfect and something that every conference and event marketer can use because I do not care how many Facebook cover photos you have created or how many Twitter backgrounds, we all forget the proper size 10 minutes after we have posted the image. Just-a-fact.
An big hat tip to Heather Taylor of eConsultancy for sharing this (she is right, this is too good not to share) and a huge thanks to LunaMetrics for creating this soon-to-be legendary internet marketing masterpiece.