The Google Webmaster Central Blog announced they are now allowing up to four listings from a single domain in the first page of their search results. Add site links, a more results search box and a map and one site can really dominate the first page of Google results.
"Today we're expanding the feature so that, when appropriate, more queries show additional results from a domain. As a webmaster, you'll appreciate the fact that these results may bring targeted visitors directly to the pages they're interested in," the site posted.
"As before, we still provide links to results from a variety of domains to ensure people find a diverse set of sources relevant to their searches. However, when our algorithms predict pages from a particular site are likely to be most relevant, it makes sense to provide additional direct links in our search results."