Even Bing & Yahoo.

Here's my situation: I put up a new article on my site and I went to Google and searched for part of the article's title, then chose "past hour" to refine my search and got nothing for my site. There's plenty of results for other sites, but none at all for mine.

Google crawls my site fine, an my robots.txt file isn't blocking anything. What can be causing this to happen? I guess this has been going on for a while but I only noticed now.

Any ideas/suggestions would be appreciated.

Thanks.