Top 10 Mistakes in 2007
1. Bad Search
Overly literal search engines reduce usability in that they’re unable to handle typos, plurals, hyphens, and other variants of the query terms. Such search engines are particularly difficult for elderly users, but they hurt everybody.
2. PDF Files for Online Reading
Users hate coming across a PDF file while browsing, because it breaks their flow. Even simple things like printing or saving documents are difficult because standard browser commands don’t work. Layouts are often optimized for a sheet of paper, which rarely matches the size of the user’s browser window. Bye-bye smooth scrolling. Hello tiny fonts.
3. Not Changing the Color of Visited Links
A good grasp of past navigation helps you understand your current location, since it’s the culmination of your journey. Knowing your past and present locations in turn makes it easier to decide where to go next. Links are a key factor in this navigation process. Users can exclude links that proved fruitless in their earlier visits. Conversely, they might revisit links they found helpful in the past.
4. Non-Scannable Text
A wall of text is deadly for an interactive experience. Intimidating. Boring. Painful to read.
Write for online, not print. To draw users into the text and support scannability, use well-documented tricks:
* subheads
* bulleted lists
* highlighted keywords
* short paragraphs
* the inverted pyramid
* a simple writing style, and
* de-fluffed language devoid of marketese.
5. Fixed Font Size
Respect the user’s preferences and let them resize text as needed. Also, specify font sizes in relative terms — not as an absolute number of pixels.
6. Page Titles With Low Search Engine Visibility
Search is the most important way users discover websites. Search is also one of the most important ways users find their way around individual websites. The humble page title is your main tool to attract new visitors from search listings and to help your existing users to locate the specific pages that they need.
7. Anything That Looks Like an Advertisement
Selective attention is very powerful, and Web users have learned to stop paying attention to any ads that get in the way of their goal-driven navigation. (The main exception being text-only search-engine ads.)
8. Violating Design Conventions
Consistency is one of the most powerful usability principles: when things always behave the same, users don’t have to worry about what will happen. Instead, they know what will happen based on earlier experience. Every time you release an apple over Sir Isaac Newton, it will drop on his head. That’s good.
9. Opening New Browser Windows
Opening up new browser windows is like a vacuum cleaner sales person who starts a visit by emptying an ash tray on the customer’s carpet. Don’t pollute my screen with any more windows, thanks (particularly since current operating systems have miserable window management).
10. Not Answering Users’ Questions
Users are highly goal-driven on the Web. They visit sites because there’s something they want to accomplish — maybe even buy your product. The ultimate failure of a website is to fail to provide the information users are looking for.
Top 7 Mistakes in 2009
Top 5 Mistakes in 2010
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