I don't know if it's that straigh-forward as "not core to their revenue stream". At the time it launched I guess it was supposed to be part of their core revenue stream -- it was supposed to give them more insight into what their users are into, and thereby allowing them to target their ads better. Not too different to Google+, I guess, just a different wrapper. I think the problem here was that it didn't catch on as well as they wanted it, and even people I know who were using it, moved on after a while.
So, I guess it would be more correct to say that you shouldn't use Google products that aren't going to be popular enough. Unfortunately I don't have such an insight into the future.
The answer is simple, you wait until they are monetizing it and are clearly going to support the product into the future. No one is forcing you to be an early adopter.
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If you haven't learned to not use a Google product that isn't core to their revenue stream in the year 2013, I don't know what to tell you.
I don't know if it's that straigh-forward as "not core to their revenue stream". At the time it launched I guess it was supposed to be part of their core revenue stream -- it was supposed to give them more insight into what their users are into, and thereby allowing them to target their ads better. Not too different to Google+, I guess, just a different wrapper. I think the problem here was that it didn't catch on as well as they wanted it, and even people I know who were using it, moved on after a while.
So, I guess it would be more correct to say that you shouldn't use Google products that aren't going to be popular enough. Unfortunately I don't have such an insight into the future.
The answer is simple, you wait until they are monetizing it and are clearly going to support the product into the future. No one is forcing you to be an early adopter.