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A 401(k) match _is_ free money though. When you leave the company, you can just cash out the account - the penalty will still probably be less than the match gave you, so you come out ahead. Of course, it's best to just let it sit in retirement accounts until you can take a qualified distribution.
You can even get fancy and roll it over into an IRA and, if you have excess cash, convert it to a Roth IRA.