What are advantages to purchasing multiple domain names for a single website?

When purchasing a domain name, what are some advantages of purchasing additional domain names that are similar to the original (which, of course, all point to the original website).

The two reasons I come up with are (1) that if a word is misspelled or if ones memory isn't as good as they thought, the person would still get to the correct website; and (2) it will avoid others from spoofing your site and/or stealing potential customers.

What are some other reasons and/or guidelines for multiple domain names for one site?

Thanks, dmg
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>>it will avoid others from spoofing your site and/or stealing potential customers.

That's it in a nutshell.  But register your domain as a trademark, and you can easily remove competitors, should they attempt to take advantage of your business.

Of course, having a profit making business is most important.
>>easily remove competitors,

Let me rephrase that:

If your web domain is also trademark, you will easily prevail in arbitration to stop a someone else from using the name, however you will spend time and money to do this which is a lot more than registering the domain name in the first place and avoiding the hassle.

If I had productA.com, I would definately want productA.net and ProductA.org, but I might also want to register productAsucks.com, just in case, LOL.

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dgage123Author Commented:
What if there is no product to protect? dmg
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Then you bought some extra domain names.

Actually pointing extra domains at the parent domain could hurt your SEO, if that matters to you.

dgage123Author Commented:
What is SEO?
dgage123Author Commented:
Okay, I looked it up myself and SEO stands for: search engine optimization which is the process of improving the volume and quality of traffic to a web site. That makes sense.
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