Yess I love constructive feedback, negative/positive are both very accepted.
The Facebook pop-up is a very good point - the purpose of it is to obviously network the website's name a little more since it's still rather small, but I do understand how it doesn't make sense to 'like' something you haven't seen yet. Thanks for bringing that to my attention, pop-up removed!
As for the site loading slowly, I'm not sure why it would. It loads faster than most sites for me, but then again I do have a very speedy internet connection. Any tips on how to make it so it doesn't load as slowly? Or is that something you can only resolve by having multiple servers and such?