why does a website not come up in your search engine when I enter it?

[Cat]

http://www.stevespann.com does not come up... yahoo tells me there is not one... but there is. I can enter it directly into the browser and go to the page. Why can't yahoo see it exists? Google can?

[Joe]

Fairly new websites take a while to be indexed for search engines. My website took like 2 weeks yahoo takes even longer

[JAB]

i have the same thing i open a new web-site a few weeks ago http://www.bags4uny.com to sell handbags, and google have it from day 1, and by yahoo im still waiting its should come up ,everybody knows that google is much faster, attest by that point , but the question is what can we do that they should get it faster ?

[Jake]

The definitive test for being listed in a search engine is the search: site:stevespann.com

I confirmed that Google (65% of searches) sees it, but Yahoo and it's owner Bing don't see it.

Generally a search engines as to be made aware of a site either by direct submission:
http://search.yahoo.com/info/submit.html

or through search spiders 'discovering' it through links from other sites already indexed. Links from other sites are needed to raise the search result position anyway...