Search features in Sharepoint 2010

1. Interactive Search Experience – A richer search experience providing flexible navigation, refinement and related searches was built. Both Standard and FAST Search for SharePoint get query...
1. Interactive Search Experience – A richer search experience providing flexible navigation, refinement and related searches was built. Both Standard and FAST Search for SharePoint get query completion, spell checking, wild cards and more. FAST enhances this experience enabling feature content for common queries and providing more flexible navigation and document thumbnails and previews including in slide navigation of PowerPoint presentations which is a common end user scenario.
2. Relevance – We improved the out-of-box ranking and expanded the relevance factors including social data such as tagging and usage (clicks). FAST Search adds more configurable set of relevance inputs for custom applications and specialized corpuses.
3. People Search – We greatly improved people finding based on social networking and expertise algorithms and tailored user experience for people including getting views of authored content. As users frequently do not know or recall the spelling of people’s names, we built a new phonetic search algorithm that works much better than previous approaches to spell checking for names. In testing, we had a lot of fun coming up with crazy ways to misspell each others' names to see if we could stump it.
4. Connectivity – We know lots of data lives outside SharePoint so expanded and improved our connectors to index web sites, file servers, SharePoint, Exchange, Lotus Notes, Documentum and FileNet. The updated Business Connectivity Services (previously the BDC) described below makes it much easier to index an arbitrary source such as a custom database. You can create this search connection without code using the new SharePoint Designer.
5. Scale and Platform Flexibility – We made significant performance and scalability improvements through our search technology. Optimizing for 64-bit helped but we also introduce partitioned indices and scale-out query servers in SharePoint search this release. FAST scales-out even further and has significantly more pipeline extensibility to handle the largest collections and most complex value-added processing and search applications. We think both end users and IT will be immediately excited about the new capabilities supporting hundreds of millions of documents with great index freshness and query latency.