1. Background music on your web page
Unexpected music/sound spewing from the PC can be very annoying, especially if the user is accessing your site from work. And if user has the sound turned off, as I usually do, it may seem a waste of time for them to download something they cannot use.
2. Gratuitous Use of Bleeding-Edge Technology
Don’t try to attract users to your site by bragging about use of the latest web technology. You may attract a few nerds, but mainstream users will care more about useful content and your ability to offer good customer service. Using the latest and greatest before it is even out of beta is a sure way to discourage users: if their system crashes while visiting your site, you can bet that many of them will not be back. Unless you are in the business of selling Internet products or services, it is better to wait until some experience has been gained with respect to the appropriate ways of using new techniques.
3. Scrolling Text, Marquees, and Constantly Running Animations
Never include page elements that move incessantly. Moving images have an overpowering effect on the human peripheral vision. A web page should not emulate Times Square in New York City in its constant attack on the human senses: give your user some peace and quiet to actually read the text!
4. Not making web pages viewable to your audience
For most sites, 1024×768 will cover most visitors. for this but don’t ignore the other sizes. In actuality, the real width of a 1024×768 screen is about 960 pixels when you account for scrollbars and window edges. Create your website using layouts that will adjust when the window is resized.
5. Orphan Pages
Make sure that all pages include a clear indication of what web site they belong to since users may access pages directly without coming in through your home page. For the same reason, every page should have a link up to your home page as well as some indication of where they fit within the structure of your information space.
6. Long Scrolling Pages
Only 10% of users scroll beyond the information that is visible on the screen when a page comes up. All critical content and navigation options should be on the top part of the page (above the fold). More recent studies show that users are more willing to scroll now than they were in the early years of the Web. We still recommend minimizing scrolling on navigation pages, but it is no longer an absolute ban.
7. Lack of Navigation Support
Don’t assume that users know as much about your site as you do. They always have difficulty finding information, so they need support in the form of a strong sense of structure and place. Start your design with a good understanding of the structure of the information space and communicate this structure explicitly to the user. Provide a site map and let users know where they are and where they can go. Also, you will need a good search feature since even the best navigation support will never be enough.
8. Non-Standard Link Colors
Links to pages that have not been seen by the user are blue; links to previously seen pages are purple or red. Don’t mess with these colors since the ability to understand what links have been followed is one of the few navigational aides that is standard in most web browsers. Consistency is key to teaching users what the link colors mean.
9. Outdated Information
Budget to hire a web gardener as part of your team. You need somebody to root out the weeds and replant the flowers as the website changes but most people would rather spend their time creating new content than on maintenance. In practice, maintenance is a cheap way of enhancing the content on your website since many old pages keep their relevance and should be linked into the new pages. Of course, some pages are better off being removed completely from the server after their expiration date.
10. Overly Long Download Times
Traditional human factors guidelines indicate 10 seconds as the maximum response time before users lose interest. On the web, users have been trained to endure so much suffering that it may be acceptable to increase this limit to 30 seconds for a few pages.
Even websites with high-end users need to consider download times: many B2B customers access websites from home computers in the evening because they are too busy to surf the Web during working hours.
How does your website stack up? Take our evaluation survey and we’ll let you know!