See the website of Jakob Nielsen
- Bad Search (and doing search right can be a real pain in the ass)
- PDF Files for Online Reading (great for manuals and stuff-that-goes-straight-to-the-printer, but I don’t want to have to read your PDF to know what your products are)
- Not Changing the Color of Visited Links (or not having clearly distinctive links at all)
- Non-Scannable Text
- Fixed Font Size
- Page Titles With Low Search Engine Visibility
- Anything That Looks Like an Advertisement
- Violating Design Conventions
- Opening New Browser Windows (my firefox opens these up in a new tab instead, but still)
- Not Answering Users’ Questions (companies still tend to forget that web is a bi-directional medium and is becoming more and more so)
