Some time ago, my site was made available on the net, and it got a ranking of 48 on Yahoo, altavista, and alltheweb, but 100# on Google. I then included a sitemap generated to submit it to Bing and Google. Also, I did three article submissions on review sites. I noticed that the position had reached to 32 on Yahoo, altavista and alltheweb. On Google, it was seen on 80 places. My friend told me that it is a good start. But, I feel that the sudden drop in rank is not a good beginning. What is the issue? Sitemap is a problem? Should I remove it?