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I need to describe an app that lets users post to many social services at once. Is it correct to say "update multiple services at once"?

I'm open to alternative suggestions.

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Nothing wrong with it, but I'd be more comfortable with several services at once or multiple services simultaneously, depending on how technical you are. – TimLymington Aug 31 '12 at 15:40
up vote 4 down vote accepted

It seems that there's nothing wrong in this phrase, as long as "multiple" refers to the noun "services".

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At once has at least two different, but related meanings

1 at the same time : simultaneously

2 immediately

While your usage may be comfortable with both, there could be circumstances where the immediately may be understood, but where you wanted to focus on at the same time.

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