Earlier I stumbled by a post in "Music" saying that the Oxford Comma is worthless, so click here to see what the Oxford Comma is and why it is valuable in text.

Question

afrodiddle · Answer

The Oxford comma optionally situates itself behind the word "and".
I believe it is important in order to have a complete understanding of someones sentence.

afrodiddle · Answer

Here are two sentences that I will use as an example to show what the meaning behind it without the Oxford comma, and what the meaning of it is with the Oxford comma.

-without-

Today I have decided to walk on the beach with my parents, Jaime and Randy.
 - This sentence is saying that your parents names are "Jaime" and "Randy". - 

-Oxford comma-

Today I have decided to walk on the beach with my parents, Jaime, and Randy.
- This sentence is telling you that you walked with not only with your parents, but also with two people named Jaime and Randy.-

I hope this helped you understand a little bit more on how to not only use the Oxford comma, but what difference it makes.