Well but my point is why can't Google recognize these phone-number-lookup sites as the chaff that they are? Nothing should rank lower than them in any search th

Well but my point is why can't Google recognize these phone-number-lookup sites as the chaff that they are? Nothing should rank lower than them in any search that would return their pages. Said another way: it should be harder for them to clog the top of the SERPs (of course "them" could imply any number of topics).