For those of you interested in Heraldry...

[eViLe_eAgLe]

What are the restrictions? And awesome btw.

[Midgardsormr]

What are the restrictions? And awesome btw.

From the site's FAQ:

What are the terms of usage?

This image generator for heraldic shields and coat of arms is free for non commercial use. You may generate as many and as different designs as you choose and use for your own homepage, rpg campaigns, world building projects. Whatever. The creations from this are free to be used in the non commercial domain. Praise and credit by linking back to this page will obviously be appreciated but is not mandatory.

Each generated picture will be stored on this site and is displayed in the lists so you may come back later to redownload your creations or see what others have created in the meantime. By using this tool you agree that you are okay with this

No provisions are made for commercial use as far as I saw. You'd have to negotiate terms directly with the creator. It is implicit that fantasyshields.com retains ownership of the images, although depending on where the component images came from, that might not be so clear. From the looks of it, and the limited selection of components, I'd say that he's creating the imagery himself, so the entire generated image is almost certainly his property.

IANAL