ETLnathan wrote:
Is there something that I can do to make sure that the creator does not mind me using it for my business, or is there some kind of documentation I should look for?
Any restrictions, terms/conditions of usage, stipulations etc are usually included in a "readme" or other appropriately named file bundled with the extension. Additionally, the developer's website/support forum usually contains the the particulars relating to usage. If a developer has attached conditions relating to commercial use, they will make sure that they quite visible

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Regards