Have anyone think of these trick for Share Cash.org?

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I've just joined ShareCash.org and found their paying rate really attracting. Yet, the survey that need to be completed before each download is really annoying. Then, I notice that besides completing the surveys, there is another option: paying to upgrade to premium account. The cost to upgrade is not really expensive. Then, I started to think, what if I pay to upgrade to premium and post the premium user account and password together with the download link? Considering the high payment for each download, it worths trying, isn't it? Have anyone tried this? What's more, I want to ask if Share Cash.org is like linkbucks that counts the download from the same computer? If yes, upgrading to premium and self-downloading can be another trick, right? Have anyone who have come up with these ideas before? Or even better, if someone have tried these before? As these tricks involve investment, I hope to gather more information before trying.