i started to build a mobile website more than a month ago. as i had prepared most of my content so i finished building it in ten days. then i submited it to yahoo, but it did index any of my pages. then i did not want to wait and submited my sitemap to yahoo. at the beginning it indexed seven pages, then decreased to five, and finally three!! and it dropped my homepage too. i submited my sitemap to yahoo yesterday but it has not indexed any pages yet.

i kept adding original content in the past month regularly, and google indexed all my pages, live indexed most of my pages.

could anyone help advise what i should do, thanks.

nothing at all.

You should get some good links for your sites. Do some competition research and see which sites rank well on Yahoo. Don't try to cheat!
If nothing happens in one more month, you could contact them and request a reconsideration.

Maybe in this situation you need first of all stop panic and add sitemap again. I suppose that issues you have with yahoo are temporary ones.

Can you call them and have it reversed?

thank all of you, yahoo indexed my homepage a few days ago, to my dismay however, only four pages being included, and no traffic of course from yahoo.

You should call them.

well you may have to use there webmaster tool to check for problems with your site

well i have been using yahoo webmaster all the time and now only two pages indexed, do not know why.