Usabilla (http://usabilla.com) is a lean and mean tool to collect visual feedback on any web page, mockup, wireframe or concept. We offer fast and simple usability tests in any stage of the design process. When we're talking about usability testing, we try to keep it as simple as possible.
Usabilla has partnerships with multiple design, usability, and user experience blogs. At these blogs we got small ad spots we want to use to invite designers, developers, usability gurus, and others to take a closer look at our product or give Usabilla a test drive with a free account.
We want to have a banner in three different formats, which can be used to advertise on multiple blogs: 150 * 150 pixels, 230 * 110 pixels, and 400 * 180 pixels. The banner needs to be in the same style for these three formats, should contain a clear call-to-action, and should be recognizable as 'Usabilla'.