It seems to happen more and more frequently as the economy gets tighter.  You get a set of books, software or office supplies in the mail you simply did not order.  Then a few days later an invoice arrives.

The Minnesota Attorney General mailed a briefing today to business associations outlining what your legal rights and obligations are if you receive unordered merchandise.

Quick summary:

- You do no have to return unordered merchandise as the law deems it an "unconditional gift".

- You don't have a legal obligation to notify the sender that you are keeping the unordered merchandise, but the FTC recommends you do.

Read the full briefing here.