Table 2.

Feature and task evaluation by experts during phase 3 and by test users during phase 4.

Feature/task evaluation	Phase 3: design session 4 (expert evaluators; n=2)—SUSa item 3				Phase 4: usability and quality evaluation (test users; n=13)—SUS items 3 and 8
	Strongly disagree/disagree, n	Neutral, n	Strongly agree/agree, n	Estimated SUS numeric score		Category score
Create an account	0	0	2	78.42		Good
Select preferred categories	2	0	0	77.74		Good
Find a specific item using the category cards	0	0	2	76.95		Good
Use filter to narrow resources	1	0	1	65.37		Okay
Like a resource	0	0	2	80.01		Good
Bookmark a resource	0	0	2	76.09		Good
Search to find a specific resource	0	1	1	68.46		Good
Send a message to developers	0	0	2	82.34		Excellent
Share a new resource for the community with the developers	0	0	2	79.25		Good
Find the most liked resource	0	0	2	85.42		Excellent

^aSUS: System Usability Scale.