AirDropper lets people put files into your Dropbox without signing up

<a href="http://news.ycombinator.com/item?id=1608851" rel="nofollow">http://news.ycombinator.com/item?id=1608851</a> <a href="http://news.ycombinator.com/item?id=1614834" rel="nofollow">http://news.ycombinator.com/item?id=1614834</a> <a href="http://news.ycombinator.com/item?id=1656422" rel="nofollow">http://news.ycombinator.com/item?id=1656422</a>