PageRank Sculpting 是一種對內(nèi)頁 Link Juice 操控的SEO技巧,通過對Page Rank流向的操控,來得到最大的優(yōu)化效果。該技術一直是專家級別的SEOer所采用的站內(nèi)優(yōu)化手法。但是,Matt Cutt 在SMX會議上說了這么一段話
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.
用大白話講,
調(diào)整前
如果把一個頁面可以流出的 PageRank 比喻成一桶水,把導出鏈接比喻成水管。
如果有5根水管往外輸水,你將其中的1根水管用 nofollow 扎起來,那么每個水管輸出的水 (link juice) 就是總量的 1/4
調(diào)整后
仍然把一個頁面可以流出的 PageRank 比喻成一桶水,把流出的水分別倒進5個杯子(剛好能裝下)
其中1個杯子用nofollow蓋上了杯子蓋。那本來該流進這個杯子中的水,就白白浪費掉了,另外4個杯子得到的水 (link juice) 還是總量的1/5