Speak-Read-Write.com: How to Boost Your English Skills. A very interesting short article by Sally Jennings that contains useful tips to help you better your English.
Spracoach.de - Business English Services: A list of links to improve your English and your business English, to read newspapers in English and to have fun by reading jokes.
StrategicComm.com (Strategic Communications): "The Ten Commandments of Client Presentations." Short article with
ten useful tips for client presentations.
Volterre-Fr.com: "Business English on the Web." A brief article by Linda Thalman about some of the ways one can use the Internet to better his / her business English.