PageRank Sculpting 是一种对内页 Link Juice 操控的SEO技法，经过对Page Rank流向的操控，来达成最大的优化效果。该技术一直是专家级别的SEOer所采用的站内优化手法。不过，Matt Cutt 在SMX会展上说了如此一段话So today at SMX Advanced, sculpting was being discussed, and then Matt Cutts dropped a bomb shell that it no longer works to help flow more PageRank to the unblocked pages. Again — and being really simplistic here — if you have $10 in authority to spend on those ten links, and you block 5 of them, the other 5 aren’t going to get $2 each. They’re still getting $1. It’s just that the other $5 you thought you were saving is now going to waste.移译一下：调试前假如把一个页面可以流出的 PageRank 借喻成一桶水，把导出链接借喻成水管。假如有5根水管往外输水，你将其中的1根水管用 nofollow 扎起来，那么每个水管输出的水 (link juice) 就是总量的 1/4调试后毅然把一个页面可以流出的 PageRank 借喻成一桶水，把流出的水作别倒进5个杯子（刚好能装下）其中1个杯子用nofollow盖上了杯子盖。那压根儿该流进这个杯子中的水，就白白浪费掉了，额外4个杯子达成的水 (link juice) 仍然总量的1/5
