I enjoyed your game
I have a touchscreen monitor and it was very fun to play it with that, maybe you could release an android app version?
I also found a problem though, I managed to cross my own line (I think I have included a screen shot of it but last time I tried to post an image I failed, we will see)
I found the game fun but I am not very good at it
It was easy to pick up as the goal was simple, however the mechanics felt a little restricting and that made me not want to continue playing as it often it felt a little unfair. It felt just as likely that I would get an awkward asteroid on the first level as the third, the time to do it in did not feel like enough of a difference between the levels.
I thought the presentation was well done with the links to login with facebook and the buttons and interface, also I like the sound effects as I felt they fit in very well with the game.
I hope that helps
edit: I will fill out the form too and I could not add the image so here is an imgur link to it http://imgur.com/Yx6UV