NSDL SNAPSHOT, JUNE 2007: CLICKDENSITY METRICS
This snapshot report introduces a new webmetrics tool, Clickdensity (clickdensity.com). The tool
records the positions of users! clicks on a web page. After a demo at Museums and the Web
2007,1 NSDL-CI purchased a one month trial contract with Clickdensity. From May 22 to June
18 2007, the tool recorded the position of clicks by users on the NSDL front page. The
distribution of these clicks is displayed in the "heat map! figure on the next page – best viewed in
colour – in which red and yellow areas represent the highest density of clicks.
Most popular links
The most popular elements on the front page are the search query box and "search! button
(yellow and red in the figure). This finding correlates with Omniture and user testing data which
show that searching is a key user task.2 The most popular links in the left navigation are
"Resources for K-12 Teachers! and "Resources for First-Time Users,! followed by "Browse by K-
12 Concept Maps! and "Browse by Topic.! There are also clicks that do not fall on any links.
Spatial distribution of clicks
The majority of users click on a narrow horizontal band across the middle of the upper half of
the front page. This pattern reflects findings from other website studies, including eyetracking
studies, which show that website users typically scan and interact with a website mainly in a
triangular-shaped area between the top and left borders of a page. From this point of view it
may be worth considering reducing the pixel height of the top NSDL banner, in order to promote
important front-page links, such as the Resources/Community links, up into this triangular area.
Temporal distribution of clicks
Clickdensity records how long users view a page before clicking on that page. Below are data
for the three most popular elements on the front page: the search box (left), the search button
(middle), and the K-12 concept maps link (right). Once the front page is loaded, the modal time
for users to click on the search box is 1 second, s