Long time troller first time poster! Have been a web/graphic designer for 5 years Professionally and have been interested in it for over 10 years!
First of all the dotted lines look dated. Like an old Quark express line style! I don't think they have any relevence and would look much much better without them!
I have seen this big Right/Left scrolling boxes on many pages and like all that I see, I say...Whats the point? It's really fun for a web designer to mess around with these but the average surfer will not spend any time clicking arrows right to left on the main page, Infact if they see it they may even leave immediately! Think its more suited on a portfolio page then the main page, Maybe making it a rolling flash graphic which is around half the height?
The rest is nice, web 3.0/Social Networking style, very fresh.