The Khan and Locatis study [93] was done primarily for efferent sites, with the assumption that the goal is to click and find information. Eye tracking studies that rate efficiency in finding links such as "Eye Tracking on the Internet" [99] combined with studies on density may provide more fruitful insights into the efficiency of links on efferent sites.

Studies that measure aesthetic goals of exploration (e.g., [115]) may find different results as reader purposes are quite different. The Connection Muse hints at this difference: "Literature, on the other hand, demands a system designed for whole-text reading--that is, one designed to accommodate readers who wish to consume an entire hypertext in a satisfying manner. [116] " The question is in the manner of consuming.