graeme_p - 5:04 am on Sep 3, 2011 (gmt 0)
except they're pretty much saying you *gotta* use +1 - at least that's what the clients hear.
Why? It only affects SERPS for people who follow those who +1. Are these sites going to get lots of +1s from people who are followed by potential customers?
Having a +1 button does not seem to greatly change the number of +1s you get.
If its just the clients perception and you disagree but cannot change their minds, that is their problem - much the same as if they insisted on link exchanges with dodgy sites.
@indyrank. This is different. It is more like what Facebook does with links - do they follow robots.txt? Incidentally FB also censor links in comments, even to fairly mild material (Wikipedia entry on a racy text adventure game, IMDB page on a frightening but not particularly offensive film).
I agree that ideally Google would index them separately, but that would be expensive. It does not seem unreasonable to say that you should not put +1 buttons on pages you do not want indexed. I think what they need to do is document it better so people are clear about it when they add the button.