@ruslandolgov,
This is an impossible question to answer for we at a2k are not a multibillion dollar marketing firm that can spend several million dollars to fund a study to answer your question. And if we were, we such a firm, we wouldn't give the answer away for free.
Keep in mind this is a spam free zone. If you choose to drop spam on this thread through your account or through another dummy account, expect deletion from one of our administrators or moderators.
Besides, I expect your third question is questionably legal as it might infringe on copyrighted research.
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