The gray overlay is supposed to highlight the search bar. It's supposed to make everything on the site gray except for the search bar. Is that not the case for you? Is the search bar also graying out? If so, that's a bug I need to fix. So far I haven't been able to reproduce it on my end, but doesn't mean there isn't a bug.
Stacks isn't promising the ability to study over the Internet necessarily; however, you could if you wanted. For example, you could ask questions via chat. On the other hand, you could meet on Stacks and then move to Skype to study. Or even more, you could potentially meet up in person if you have gotten to know your buddy well enough.
Think of it like how you might think of Tinder. Tinder is called online dating, but you wouldn't necessarily have a date on Tinder.
Stacks isn't promising the ability to study over the Internet necessarily; however, you could if you wanted. For example, you could ask questions via chat. On the other hand, you could meet on Stacks and then move to Skype to study. Or even more, you could potentially meet up in person if you have gotten to know your buddy well enough.
Think of it like how you might think of Tinder. Tinder is called online dating, but you wouldn't necessarily have a date on Tinder.
The feedback here is good! It is appreciated!