[personal UX/UI review] the power of "Reply" button on review page (e.g. Chrome Web Store)

<case: Chrome Web Store's product detail page>

positive: the existence of "Reply" button on review page

reason: because of the button, the review page can be used as a terrific communication channel: 1. allowing users to answer questions of another user, which reduces communication cost of the app creator 2. working like a CS (customer service) channel, providing the app creator an opportunity to directly respond to eliminate frustrations of users, which may help reduce "bounce rate" of the app use 3. displaying interactions among users so that each thread can be more open and transparent


<case: iTunes App Store's product detail page>

[personal UX/UI review] thought on displaying product images on websites

<case: product page for Nest Cam >


<case: product page on Amazon>


<case: product page on Amazon>

positive: Can see how big the items are intuitively

reason: Putting a universally recognized size standard object such as a deck of cards, coins, silverware, etc. next to a foreign product helps viewers' understanding of the product size.  Also, if the product can be placed at a context such as a hand or an arm, that would be a bonus. 

 

[personal UX/UI review] USB port at Chunil Express bus

case: other side of seats contains a USB port
positive: lifesaver power source for many travelers
alternative: instead of a USB port, what about an outlet for each seat?

[personal UX/UI review] Amazon's rating algorithm

<source: link>
case: Amazon's rating system

positive: effort to provide useful customer review information to users by including multiple factors into rating algorithm.

The explanation states "Amazon calculates a product’s star ratings using a machine learned model instead of a raw data average. The machine learned model takes into account factors including: the age of a review, helpfulness votes by customers and whether the reviews are from verified purchases." 

[personal UX/UI review] Jura's automatic coffee machine

Case: Jura's coffee maker

Positive: contextual menus on machine screen; see how the menu screen changes from normal (photo above) to in progress (photo below) 

Positive: displaying "visibility of system status," the first principle of the 

"10 Usability Heuristics for User Interface Design" by Nielsen Norman Group so that users can know their coffee brewing status