Surveying and classifying previous work on a particular field have several benefits, which are: ⅰ) to help organise a given body of knowledge; ⅱ) to provide results that can help identify gaps that need to be filled; ⅲ) to provide a categorization that can also be applied or adapted to other surveys; ⅳ) to provide a classification and summary of results that may benefit researchers who wish to carry out meta-analyses. This paper presents a survey literature of hypermedia and Web size metrics published within the last 12 years and classifies the surveyed studies according to a proposed taxonomy. In addition, we also discuss the changes, mainly in the motivation for size metrics, that have occurred during our review period.
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