But the only places I really post are here and Reddit. I email stuff to close friends and occasionally use Facebook when I'm invited to an event but that's about the limit of my use of social media.
In general - I'm quite happy to be logged into Google across all services. It makes Google Now slightly more useful and I can happily ignore all the parts of it that don't interest me.
And advertisers are welcome to profile me to their heart's content - they just don't seem to be very good at it. I've never clicked on a targeted ad so it's seems a lot of effort to no real effect.
Unfortunately, G+ still has a ton of issues that I find infuriating, and while I actively want to like G+, I find it hard to do so. That part frustrates me more than anything, when it comes to Google and their services.