We've added two new agile project management tools for prioritizing a product backlog: Theme Scoring and Theme Screening. Each of these is a lightweight way of comparing product backlog items to one another.
You can use theme scoring to compare user stories or entire projects against one another. In this technique you identify a set of criteria that will be important in prioritizing. Each item is assessed on relative 1-5 scale against each criterion and the priorities are determined.
Like theme scoring and relative weighting, this technique can be used to prioritize user stories or projects against one another. The simplest of the three prioritization techniques, theme screening starts with you identifying a baseline item. Each other item to be prioritized is compared to the baseline item for a set of factors that will determine priorities.