As these charts indicate, the average number of sightings for Drugstore.com and Sam’s Club were consistently greater than those for all of the other retailer sites that OASIS monitors. Target, Walmart, Best Buy and Walgreens followed.
Drugstore.com’s decrease in average appearances the week of May 26 is not due to ads not appearing, rather that they appeared less frequently. For example, appearances of ads from Bausch & Lomb’s Alaway decreased by 50%, while P&G’s Charmin dropped by 43%.
