My site is no longer at the first page?

[sasanka]

Hi,

Anyone here can advise me why?
I have created my online store and after sometimes,
I saw my website make it to the top 10 of Yahoo page
with a certain keyword "xyz" (Using Singapore Yahoo)

But yesterday when I key in the keyword in Singapore Yahoo
search engine again, my website cannot be found?

What is the reason behind this?
and how can I get my website back to the top ten in yahoo again?

I am still new to SEO and therefore need advise from expert here.
Hope someone can help me, thank you

[Jack]

As per my knowledge, your site has not quality backlinks therefore it does not appear on yahoo. You should try SEO techniques, I hope your site will back top ten in yahoo.

Best Of Luck!