Maybe after you submitted your site, it will be dropped after some weeks. Your site need to be optimized so your site will be retain in the search engine listing.
its not easy to stay first on google. my friend had a site which was ranked number 1 on a google search. now its number 3 and number 1 is some spam. sad isn't it? me on the other hand, i'm the first, second, third and all the results for my name on google