I'm going to go a little cliche' here but I feel like I have to do that:

thank you so much for this amazingly beautiful game. It was one of the best games I've played throughout my 22 years of age. I fell in love and fell connected with every little aspect of it. The music and sounds were absolutely brilliant and the art was gorgeously heart breaking.
As dumb as it may sound, the perfect combination of all factors in this game had me emotionally tied to it and every minute I played through it and advanced I hoped it will never end and I actually even tried stopping myself from keeping playing so some will be left for afterwards... I failed miserably.  :'(
I might be going overboard here but the end actually made me teary (and I'm a guy!) as despite all the humor being used I couldn't avoid this gloomy (though not negative) feeling that came along.  :-X  :-X
Sorry if I sound obscure, it's really hard sometimes to try to explain such a rich experience of emotions.  :D

So, thank you very much for sharing this game with the world. I love you.

Eagerly waiting for a sequel, (or something  ;) )

Sagi

Looks like somebody loves Goo as much as I do! There's no plans for an  official sequel, but you can get a program for installing custom levels! Go to the download site at http://goofans.com/gootool/download. As well, Hayny, a forum member here is working on what could be confused for a sequel. It's not done yet though. For now read about it here. http://2dboy.com/forum/index.php/topic,818.0.html

Oh, joy!
Thanks a lot for the info!  :D