Social proof Design pattern

Social proof: olark.com
Social proof: bhphotovideo.com
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Social proof: ethn.io
Social proof: autobutler.dk
Social proof: autoquake.com
Social proof: mediatemple.net
Social proof: pagelime.com
Social proof: mailchimp.com
Social proof: digg.com
Social proof: basecamphq.com
Social proof: basecamphq.com
Social proof: brightcove.com
Social proof: huddle.net
Social proof: huddle.net
Social proof: mahalo.com
Social proof
Social proof: businesscatalyst.com
Social proof: dailymile.com
Social proof: dailymile.com
Social proof: twitter.com
Social proof: hootsuite.com
Social proof: usabilla.com
Social proof: conceptfeedback.com
Social proof: digitalpodge.co.uk
Social proof: getballpark.com
Social proof: zootool.com
Social proof: mailchimp.com
Social proof: woobius.com