Interesting PhilanTopic post about the concept of usability. This is a concept that's long been used in reference to web design, but the author explores it as a way of thinking about how your nonprofit approaches the whole online donation process, not just the tech part. Is it easy for the potential donor to understand what your organization does? Is it clear why you're asking for support generally and the specific level of support?
It's a new way of thinking about a familiar concept, and a good read to start the new year!