"we reserve the right to take action where we see abuse." With that option on the table, and Googles broad and subjective discretion, I don't see any reason to

"we reserve the right to take action where we see abuse." With that option on the table, and Googles broad and subjective discretion, I don't see any reason to ever Do Follow a link again. It seems like all the legit reasons to link out have nothing to do with search rankings, so why risk Google's Ire? More importantly, if No Follow becomes the default, wont that be a net negative for Google's index?