It will be really helpful, I won't have to go back and forth to see all reviews on a provider.

I see your point but not everyone wants all of the reviews, maybe just the most recent ones (marked "New" or not).

I often go to the bottom of the Profile page and control-click on the View buttons to load each review in a separate tab. You might prefer separate browser windows. Sometimes I do 1 or 2; if there is a flurry of recent activity, 3, 4, 5 or more tabs

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Control-click, Shift-click, Right-click, Wrong-click ... there's a bunch of ways to open links besides just being restricted to one window and one tab. And I've done that on Windows, MacOS, and different browsers in each.

I think that perfectsize just has to find the perfectkeystrokes and see if multiple tabs eases the back-and-forth (review-back to profile-review) problem

My hobby phone is dumb so I'm not surfing, but my regular phone is smart with a generous data plan.  

My first thought is that guys with limited-data hobby phones don't want to do download 30 reviews when all they want to do is see one or two recent ones before making a call or sending a text. I'm not sure, but going back to the profile from a review is not another download but recovered from the phone (or tablet) browser cache.  

So, even with a device that can't open numerous tabs or windows, I think the option to avoid using up your data allocation on one page of 300+ reviews (yep, there are some with that many and more) is important.  

Anybody know how cache is used on smart phones and tablets? Is "go back to previous page" from cache or another download of that page?

Both options can be made available - tree (default) and flat (button)