Hello Friends

I have good rankings in google. I have 10 sites. Infact very good rankings in google and every single page indexed.

The problem is I donot have even single page indexed in yahoo and msn. These all sites are present on one server. I am really need it now because yahoo is giving good traffic now a days.

The sites are 2 years old. Could it be problem of server OR anything else ?

If google is spidering and ranking it well, it must not have problem with linking structure or content. right ?

These are not affilaites sites. But some similar text and not cross linked.