Contrasting is something else to take into account when creating a memorable username. Take out a piece of paper and create two columns or use the username worksheet on page 26 of the workbook in the free kit. Other ways to get great keywords: Here is an example of some great words I found by looking up the synonyms of happy. Now start combining your keywords to form usernames.
This can also be a great option for separating words.
Some generated content parodies existing styles and artists, whilst others are based on original structures.