Many portal systems has integrated modules to add additional languages, content may be added from the admin side in different languages. Of course use the help of a professional translator, also post site deployment, your help desk should be able to handle online and off-line enquirers in that second or third language, having a content portal has its advantages, the most basic being the ease of managing the content as the site grows and the potential to increase the site functionality in an easy modular manner. This can be adapted for ecommerce systems too with additional change in the currency used, all automatic with the click of a flag button and faster too as only the text gets loaded each time.

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Web presence... simply mix and match.