I hate/dislike/despise/loathe
- clicking on an internal (aka part of the site) link and getting a 'page not found' message
- clicking on an external (aka go elsewhere) link and getting a 'page not found' message
- text that spills over table or frame borders making it difficult to read
- behind the scenes scripts that only work in certain browsers
All reflect poor web design and an uncaring attitude towards visitors/customers.