Couple of things:
IPad seems to keep the “hover window” obscuring the main page, so I have to reload the page to make it disappear.
I’d like to see a calendar feature for users, so you can put a peak (or peaks) on your schedule for a particular date. It might be a good way to find climbing / hiking partners, or stalk someone.
We have the ⛷option, and the

, I’d like to add the

option.