As a lawyer, I am appalled by the number of people who take it for granted that they can have a friend ordained online perform their weddings. Here are the facts:
* In several states, any marriage performed by such an officiant is invalid.
* In many other states, the validity of any such marriage is unclear, and could be decided by later court action.
* If there is a problem with your marriage, you will not be notified when the marriage license is filed. Instead, you will likely learn of the issue only years later, when the validity of the marriage is in question (e.g., on death, divorce, or bankruptcy). At that point, you won't have the legal rights you thought you did, and it will be too late to fix the situation.
With all the obsessing people do over the tiniest details of their weddings, don't forget to make sure that the wedding fulfills its one really critical purpose--to make you legally married.