Based on a freshly haunted topline
habrahabr.ru/blog/ui_design_and_usability/48058.html

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Find 10 differences.
This morning I almost fell off the bed, at first I thought that this service was licensed to LinkedIn - then I wiped my eyes and decided to call
Nikita Khalyavin . From a conversation with him, it became clear that Nikita did not see anything wrong with "exact copying" and no remorse of conscience tormented him.
On the site itself there is a tempting section “Copyright”, where it is proposed “to inform the Professionali.ru network team about information whose content violates your rights or is illegal”. If there is anyone on Habré who understands copyright issues in design, please comment on the situation.
UPD: brought the post to a state compatible with the rules of Habr, if anyone offended, sorry.