I am from quebec where we speak two languages (French & English). Therefore it might be usefull to have a bilingual Web Site and to have both a French and English Domain Name pointing to it. In other words, the official Domain name for the site could be in French and the English Domain name would be PARKED on the French name.
NOTE: I intend to switch from NoMonthlyFees to DreamHost.
Here is their definition of DOMAIN PARKING:
"A parked domain is when you have TWO domains POINT to the same IP address.
In other words, lets say you already have an hosting account with us called: mydomain.com
Now, you want to register the .net and .org version of your domain name and PARK them to your main account.
You would now have: mydomain.com, mydomain.net and mydomain.org WOULD all point to the same IP address, so that no matter which domain name you typed in, it would still go to the same site."