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11

Web-usability is improving

According to a survey conducted in late 2003 by the Nielsen Norman Group, usability on the web is on the upswing.

Some results from the survey:
- The overall success rate of completing a site-specific task was 66 percent and 60 percent for web-wide tasks. This compares to an overall success rate of 40 percent in a similar survey conducted in 1997.
- For site-specific tasks, the success rates of the less- and more-experienced groups were 59 percent and 72 percent, respectively, while web-wide tasks were completed at a rate of 52 percent and 67 percent, respectively.
- Web users are being more precise in their choice of search terms. In 1994 the mean length of a search query was 1.3 word, in 1997 1.9 word, and in 2003 2.2 words.
- One area in need of improvement is site search. While 56 percent of the searches done using a popular search engine were successful, only 33 percent of searches using a specific site's search tool succeeded.

Links:

  • The article Web-User Satisfaction on the Upswing Open link in new window

Henrik Olsen - May 13, 2004

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See also: Research (129)  Search (27)  Navigation (63) 


 

12

The ten most violated Jakob Nielsen design guidelines

Jakob Nielsen has made a top ten on usability principles from his book Homepage Usability which are most frequently violated:

1. Emphasize what your site offers that's of value to users and how your services differ from those of key competitors.
2. Use a liquid layout that lets users adjust the homepage size.
3. Use color to distinguish visited and unvisited links.
4. Use graphics to show real content, not just to decorate your homepage.
5. Include a tag line that explicitly summarizes what the site or company does.
6. Make it easy to access anything recently featured on your homepage.
7. Include a short site description in the window title.
8. Don't use a heading to label the search area; instead use a "Search" button to the right of the box.
9. With stock quotes, give the percentage of change, not just the points gained or lost
10. Don't include an active link to the homepage on the homepage.

Links:

  • The article The Ten Most Violated Homepage Design Guidelines Open link in new window

Henrik Olsen - November 15, 2003

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See also: Home pages (9)  Guidelines and Standards (15)  Research (129) 


 

13

Why websites are getting easier to use

A nice article on BBC online about the tenets of usability.

Links:

  • Article Open link in new window

ben hyde - November 05, 2002

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14

Common design features shared by the Web's top sites

Web Developer's Virtual Library have made some research on what design features the most visited sites in the US have in common. Some of the findings are:

- Verdana as main font (60%)
- White as background colour (90%)
- Default link colours (60%)
- Top navigation (90%)
- Client side JavaScript (100%)
- Style Sheets (70%)
- Page width optimised for 800 pixels width screens
- File size in the 35-35 kb rang with associated files from 30 to 70 kb

In the authors opinion these features define the 'best practice' guidelines for web design, because these are the features that the Web's top sites apply to. Question is if the implementation of these features is the reason why they are the most visited. I doubt it.

Links:

  • The article Ten Top Sites Compared Open link in new window

Henrik Olsen - February 01, 2002

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See also: Research (129) 


 
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