Yep. lose the snowflakes and the big advert 'Get your own domain' unless of course your getting an income from it that is.
The RSS button overlaps the search button in Firefox.
Typography needs some work, and the home page needs breaking into seperate pages.
Keep the front page simple, put the submit a joke on another page and another for the jokes themselves.
Rather than keep English and Hindi apart why not side by side translations?
If it is a good joke then it should work in any language.