Looks interesting (I really like the colour you've chosen as well), but does it require Facebook (as it seems to from the landing page info)? If so,I'll be avoiding this unfortunately.
Thanks! Yeah, so the way it works is you login with FB, create task, choose a friend, if you didn't do it, your friend can then write a message which will be posted through your account. Hence, they actually don't have "access" per-se to your actual FB.