I'm curious what your opinions are about using nofollow internally to silo content and sculpt pagerank.
Some, like Bruce Clay say to use no follow when linking to off topic pages. Others, like Matt Cutts, and some of my more experienced friends say to let it flow.
Matt Cutts recently said in a video that nofollowed links are not subtracted from the number of links calculated to distribute juice to, instead they just remove that amount from the total flow, effectively leaking PR.
What do you think?