Here's my brief advice.
I would first decide whether you want to pursue either a game programming or a web development career as this will effect what title you use for your portfolio.
If you do decide to make the portfolio focused more on game programming but you still want to demonstrate your other skills, why not just make an 'Other Skills' tab and put details of your web development work her. This will be cheaper than acquiring a new domain.
Lastly, don't forget to check the spelling on the site.
Hope that helps.