Please give me some advises for social bookmarking web site?

[Rashod]

HI guys ,I am a web developer who located in Sri Lanka.
I have developed a social bookmarking web site for all most 1 year.This month I released it to public.
address - http://www.myshouter.com
I need some solid ideas what you guys think about it.I think I'm good at back-end developing but I have some difficulties in User Interface designs,I dont have much money to hire a designer for me at this time.So I need some helps form you guys about reviewing about this site design and site functionality as well.
It will take some your valuable time.If you have some time to help me I will highly appreciated.
Please consider fallowing questions in reviewing my site.
1.Do you understand what is this site all about in with in first page?
2.what you think about colors that I have used in this site?
3.Is logging and registration process is helpful?
4.Is it easy to add web sites the system.?

Guys please consider this post is not promoting my site at all.I need some people around the world review my web site.It took more than 1 year to develop my site.Its developed from scratch.I haven't used any pre-build scripts.So this site is so much to me.
Thank You for all.Your new ideas also welcome.
Have a nice day.