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I wonder if Google would consider those three links to be the same? http://www.example.com/test page.html http://www.example.com/test page.html http://www.example.com/test+page.html

On product listing page on e-commerce site We use POST forms as 'Add To Cart' buttons. Because of that We have dozens (~40-80) forms on any product listing page, and two questions regarding them: Does these forms affect link juice of other links on the page? Are there cases when forms are somehow counted by Google as links? Regards, Lucek