my wordpress blog disappear from google

We started our website https://www.natokmela.com two months ago (February 2007). Every day we have some new article. We are doing great in google. 147 post was listed in google But last week suddenly all pages disapper over night (april 6, 2007). No hidden text or spam. We link youtube video to our site and also communtiy news and article about Bangladesh. It will be highly appriciated if some one can give me a clue what excatly went wrong. Msn and yahoo is linking our site.

Thanks in advance