  Multi-media increases engagement and is increasingly prevalent in online
content including news, web blogs, and social media, however, it may not always
be beneficial to users. To determine what types of media users actually wanted,
we conducted an exploratory study where users got to choose their own media
augmentation. Our findings showed that users desired different amounts and
types of media depending on their familiarity with the content. To further
investigate this difference, we created two versions of a media augmented
document, one designed for novices and one designed for experts. We evaluated
these prototypes in a two-way between-subject study with 48 participants and
found that while multi-media enhanced novice readers' perception of usability
(p = .0100) and helped them with reading time (p = .0427), time on task (p=
.0156), comprehension (p = .0161), experts largely ignored multi-media and
primarily utilized text.
