Plaza
eCommerce theme
Free
Launch Your Store
eCommerce Magento theme with the grid base approach, supports a list of Magento extensions including Mega Menu, Slideshow, Product List and RSS as well.
Support for This Extension
The best place to start if you need help with a specific extension is to contact the developer. All Magento developers have both a contact email and a support email listed.
Magento Platform Support
If you need support for a Magento platform, there are different options for support depending on which Magento platform you are using. Below are links for specific platforms.