If your product isn't good enough to succeed (or "win") on an opt-in basis, then your problems run deeper than what coercive sign ups can fix.
What product? they're trying to consolidate their login system across products, and you happen to get a social profile with the bundle. It's not like you even have to use it or be aware of its existence, if you don't need it.
And this was after much of the initial foofera (sp?), that had already caused Google to scale back some of its demands for/during the sign up flow, IIRC.
Plus had/has a lot going for it. Then, they tried to cram it (and "true names", etc.) down our throat.
Opt-in. Carrot first, not stick.
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P.S. Let me put it this way: I want the ability to choose for myself and entirely what aspects of a "Google profile" I make public.
Separately, I'll also add that as Google has gobbled up more and more popular products, I've become increasingly leery of a single profile that tracks and analyzes me across all of them and their varied and diverse functionality.
I'm not doing anything particularly nefarious. But when the price Amazon charges me depends on a profile, and my insurance rate or ability to get insurance may depend on another profile and "social graph", etc., etc... And also on principle and for some sense of privacy and peace of mind (however incomplete)...
Monocultures are subject to disease and corruption. One analogy that I might extent to online cultures. I don't want all my eggs in one basket -- especially when it's not even by my choice.