Did it again: An hour or so of desperate procrastination yielded a small search engine with built-in auto-suggest feature.
This one does a look-up of HTTP status codes. Seasoned web developers know how often you need to know the meaning of a certain status - both for programming a server response and for understanding it when building a site that fetches or aggregates remote content.
There are several aspects you could judge a good online form by. One of the most important parts is the ease of understanding it, how much time it takes to submit content, and how frustrating it is to make a mistake.
Take, for example, the worst case.