The new May issue of the monthly Web Marketing newsletter has been published, covering some of the recent stories on web search and online marketing trends.

This month's edition looks at the three types of keyword matching in Google Adwords and the best practice on using them to save money in an online advertising campaign. It also reviews how Google has made changes to its search results in the past month, so that they now include 'sitelinks' for results below first position and also additional listings based on search locality, driven by a searcher's IP address. Finally, the newsletter considers how Google Analytics' Motion Charts can be used to give a graphical comparison between keywords, on up to three parameters, to analyse which are performing best over a specified time period.

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