website and all pages are removed from google search index :(

My site's URL (web address) is: songsboard.com
Description (including timeline of any changes made): 3 days ago

SongsBoard - Download Hindi Movie Songs, English Video Songs,Pakistani Songs, Indian Movie Songs,Hindi Music Albums,Free Indian Mp3

i just change the title 3 days ago and i was getting around 200 unique per day from google. Today i saw only 10 unique from google search engine. I checked my site and come to know nothing was in google search engine. All pages are removed. Please help me in getting back my website

regards
Updates:
Also this website grabs data from youtube and play on songsboard.com which is similar to many video website. I didnt violate anything then why my all pages are removed.

here are the images which clearly shows the problem

http://img843.imageshack.us/img843/5227/searchresult.png

i tried to fetch through webmaster tools and i got this

http://img171.imageshack.us/img171/2296/unledabr.png

see how suddenly traffic down because pages were removed from search engine

http://img685.imageshack.us/img685/3687/unledkde.png

 

You surely would have duplicate content or some copy righted material on your web site. Now, you have to delete all the data and contact google for further details about it.

 

i think that your site get google banned. .

 

Change all contents with the original & unique contents. Contact with Google. Start your OffPage Optimization again.

 

i think your Site has been penalized by Google.SO you have to change content of your site.

 

You done some black hat techniques. Change the content and do optimize the site.

 

i didn't use any black hat technique brother. Just social bookmarking and blog commenting.