First change the design, colors are too flashy and hurting the eyes. All those colors makes your site look like one's from 90's. If you are really serious about your site, try to get a TLD like .com or .net. If you are tight on budget you can even start from .info, they are being sold for $.99 in godaddy. Best of luck
i would strongly advice u get a .com becuase no average american or UK or Indian ect will remember the TLD on that easly. maybe . myfunnyjokes.com would be a good name.
The designs are good, nice layout. Change the menu item color, the white color is not attractive and make them dark.
There is a lot of room for improvement here.. Lose that widget, it's a nuisance. Post a few recent, random or best -whatever you want- jokes on your home page, make sure the writing is easy to read and the jokes are well spaced. The list of 'ADS' is equally non-appealing. The joke categories should be separate from 'Home', 'Submit a joke' and any other stuff. And the 'polices' should be 'police'..