skins

can someone please explain what do they mean when they say BOL and SPORTSBETTING have the same skins which I noticed they have the exact same games so why is it 2 different sites if it is the same and can I play the cc freeroll on each one on the different days and I'm not new to poker but am new to some online sites..but I did notice that my cash is not on both.. so how are they related and what are the rules in cc regarding playing them.. thanks in advance for helping me to understand this.

they do not have same owners but they share most of games they are skins,poker rooms on same poker network sometimes they have
different promotions

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