Blinky
Owner
1. Requiring users to signup before browsing your site
2. Forgetting about multiple screens
3. Having ridiculous forms to fill out
4. Using hard to read or cutesy fonts
5. Implementing a Search bar that sucks
6. Bombarding the reader with a wall of text
7. Displaying your products with low-res images
Read more: http://thenextweb.com/dd/2014/06/17/7-web-design-disasters-drive-people-crazy/
Hope the designers here to share their experience as well.
Enjoy reading it. You will find it useful. 
2. Forgetting about multiple screens
3. Having ridiculous forms to fill out
4. Using hard to read or cutesy fonts
5. Implementing a Search bar that sucks
6. Bombarding the reader with a wall of text
7. Displaying your products with low-res images
Read more: http://thenextweb.com/dd/2014/06/17/7-web-design-disasters-drive-people-crazy/
Hope the designers here to share their experience as well.
Enjoy reading it. You will find it useful.