What are anti-patterns?
Anti-patterns, also called pitfalls, are classes of commonly-reinvented bad solutions to problems. They are studied as a category so they can be avoided in the future, and so instances of them may be recognized when investigating non-working systems. The term originates in computer science, apparently inspired by the Gang of Four's book Design Patterns, which displayed examples of high-quality programming methods. - Wikipedia, Anti-Pattern.
I think of Anti-Patterns as pitfalls with a pithy name.
Like the software anti-pattern counterparts, the following anti-patterns are common pitfalls to avoid when designing interactions.
If you are at Web Builder 2.0 in Las Vegas, NV next week I will be giving the Anti-Patterns talk there as well as my Designing the Rich Web Experience Talk (Principles & Patterns).