Table 6.

Phase 3 - Acceptability Ratings

	Mean (SD) for Round 1 (n = 15) (0 = worst, 10 = best)	Mean (SD) for Round 2 (n = 11) (0 = worst, 10 = best)
Likability	7.5 (1.0)	7.7 (1.8)
Usefulness	8.5 (1.3)	8.7 (1.5)
Personal applicability	8.2 (1.6)	7.8 (2.3)
Web Features
Features liked best	Videos; age progression photos; interactive sections; informational pop-up boxes; educational information - especially that associated with skin exams	Educational information; interactive sections; tanning trends timeline; videos from physician with personal skin cancer history; SPF calculator; age progression photos
Features liked least	Format (e.g., appearance, large blocks of text)	Tutorial; avatar; length of some videos