Title says it. Maybe it's a restriction of the site. Regardless, you have no indication that you've hit the 'Favorite/Keep' button. Seems off. Something to think about.
Unfortunately, Mindwipe and Vanndril have no control over the site's innerworkings. They've said before there are a bunch of things about it they would totally change if they could, but they can't.
Lunakiri said: Actually, it does. You just gotta scroll up to the top of the page. It'll be in bold red text.
Yup. "Post added to favorites" or some such. It would be nice if it was in a convenient pop-up or at least reloaded the page so you didn't have to scroll up, but see Vorp's post for more info.