The Named Entity Extractor extension by Free You Metadata (from around the web)

The Free Your Metadata Named Entity Extractor extension helps you to enrich your data in OpenRefine using AlchemyAPI, DBpedia Lookup and Zemanta. The extension works on plain text field and any unstructured (meta)data

Mining and OpenRefine(ing) JISCMail: (from around the web)

A look at OER-DISCUSS [Listserv] JISC CETIS MASHe: a complete tutorial to scrap data from a mailing list and analyse participant and contribution.

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Finding (Nearly) Duplicate Items in a Data Column (from around the web)

An other great article by Tony Hirst. This tutorial will show you how to use clustering function (ngram and fingerprint) directly in your facet. Really handy.

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From Excel file to RDF with links to DBpedia and Europeana (from around the web)

DERI Galway the author of the RDF extension (download and documentation here) show steps by steps how to use the RDF extension to reconcile your data against DBpedia and Europeana. This tutorial also go through the step to create an RDF schema

Chit Chat with New Datasets – Facets in OpenRefine (Was /Google Refine/) (from around the web)

A good review of faceting capability including text, numeric, timeline customized and scatterplot facet.

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Cleaning Date with Google Refine (from around the web)

Basic tutorial to clean up some date using OpenRefine. Great example of well structure GREL syntax to build complex transformation.

Read the full article on Hermanes Barbara's blog. 

Refine your EventBrite guestlist (from around the web)

This recipe shows you how to use Google Refine to fetch details from your EventBrite account, and to explore your guest lists in detail. This tutorial show how to - use the Create Project via Web Addresses (URLs)' and - retrieve guest information using the EventBrite API.

The full article: http://www.opendatacookbook.net/wiki/recipe/a_refined_guestlist