Have you guys ever thought about putting an option right on the study page to add a word and throw it right to the front of the queue immediately? I'm a really, how should I put this, 'ADD' type of person, so I tend to switch around tabs while Skrittering, and sometimes I'll find a word on a website I'm reading and think, "wow, I can't believe I don't know this word," and then I will go put it into a list that's almost finished so that I can study it promptly. I just think it would be especially nice if I didn't have to navigate to the vocab lists section, and find an appropriate list to put it in. I like to think I'm not completely alone in this thinking.
In short, how about a text box/drop down menu on the study page to start studying a new word NOW? That would be awesome.