- Keyboard shortcuts.
- Plus points if it follows vim scrolling
- Plus points if it reuses familiar shortcuts
- Over use of Modal dialogs
- Some Modal dialogs should be pages
- Some Modal dialogs should rewrite browser url to a page that can load it
- Modal dialogs are great for small interstitials, not whole pages
- Don't block my screen with a modal dialog asking me to subscribe
- URLs that don't return back to a useful page
- Making websites that don't fit in a resolution of width of
- Don't ask me to download your mobile app
- Preventing me from using the back/forward button
- Stupid password limits
- Making it difficult to unsubscribe
Don't spam my phone with marketing notifications. I know you can't get my attention via email spam, so don't spam me unless I ask for it.
Apps that restrict you to a particular country, with no good reason
For example, I am on the US Apple App Store, but I can't download the Starbucks Malaysia App.