To give us an idea of the overall feeling of your brand, let us know which styles you lean towards
The service is called "Olive Oil Test" -- and will be hosted at oliveoiltest.com. Simple, modern, authoritative and corporate. It should have a simple icon like a stylized checkmark that can be used as an icon in other uses (social media, favicons, etc.)
The logo can include the ".com" in some way, but doesn't have to.
I like, for example, the streamsend logo attached.