22. Photo via Helga Weber (Flickr)
http://www.albion.com/netiquette/corerules.html
http://www.networketiquette.net/
http://www.bpl.org/kids/learn/netiquette-for-kids/
http://www.bbc.co.uk/webwise/guides/about-netiquette
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licensed under Public
Domain CC0 from Flickr