This said, you can't opt out of being featured on search results. If you +1 a webpage, it will show up more in friends' search results when relevant, and your name and face will appear under it with your endorsement. That's not going to change. All the opt-out does is stop this same placement from occurring when an advertiser is relevant -- it stops your face from appearing in Google's ads, formerly known as sponsored links.
I don't mind appearing in search results, as that's just useful to others. But ads, by definition, are less relevant to a search result than the search results themselves. I don't want my recommendation appearing where a sponsor dictates. That said, I personally wouldn't mind as much if Google was paying me and shared the stats on when my face showed up ;-) (Wouldn't that change the nature of Google+ though...)
I don't mind appearing in search results, as that's just useful to others. But ads, by definition, are less relevant to a search result than the search results themselves. I don't want my recommendation appearing where a sponsor dictates. That said, I personally wouldn't mind as much if Google was paying me and shared the stats on when my face showed up ;-) (Wouldn't that change the nature of Google+ though...)