Is Any One have clear idea about crawling and indexing. Since last couple of days yahoo comes to my site and crawls more than 1 page of my site. Bute when i type site:www.sitename.com it shows only one page is indexed. Any One have idea about that?
Crawling and indexing are different parts of a search engine. The crawler puts the pages in a repository and then the indexer takes it from there to index it. There's a lag between crawling/indexing and some pages may not get indexed at all.
from my experience it can take a month or 2 for yahoo it list indexed pages (especially if your site is new) my site was crawled plenty by yahoo, but took more then 2 months for them to update the amount of my pages in their index.
yes it takes some time, I had my site crawled more than once from Yahoo and the site has been up 2 weeks now and still it does not show in the results