Reviews of Xoom, [Link](Mouse over link to see full location),
have given it a 7.4 out of 10, stating it is a little cheaper than Western Union but having issues with the time it takes for the money to actually get to family overseas.
Your question specifically about safety, and it looks like there were a few instances when a person's account was hacked but the issues were resolved satisfactorily and money sent to the correct people. So yes, it is safe in my opinion.
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