When you have enough vertical space, Google will screw your results with botched site crowding. See http://www.seroundtable.com/google-same-result-same-page-152

When you have enough vertical space, Google will screw your results with botched site crowding. See http://www.seroundtable.com/google-same-result-same-page-15287.html http://www.seroundtable.com/google-same-result-same-page-152... I've had worse, because I wanted to have 100 results in a page.