Would you capitalize the word MySpace when writing about it?

Yes, you should capitalize "MySpace" when writing about it. It's a proper noun, referring to the specific social networking website.

Here are some examples:

* I used to spend hours on MySpace in high school.

* MySpace was one of the most popular social media platforms in the early 2000s.

* The rise and fall of MySpace is a fascinating case study in the evolution of the internet.