For headlines -- especially longer ones -- it would appear that the first couple of words need to be real attention-grabbers if you want to capture eyes.

The same goes for blurbs -- perhaps even more so. Our findings about blurbs suggest that not only should they be kept short, but the first couple of words need to grab the viewer's attention.

Average blurb length varies from a low of about 10 words to a high of 25, with most sites coming in around 17.

Eyetrack III found that people do typically look beyond the first screen. What happens, however, is that their eyes typically scan lower portions of the page seeking something to grab their attention. Their eyes may fixate on an interesting headline or a stand-out word, but not on other content. Again, this points to the necessity of sharp headline writing.

Navigation placed at the top of a homepage performed best -- that is, it was seen by the highest percentage of test subjects and looked at for the longest duration.

It might surprise you to learn that in our testing we observed better usage (more eye fixations and longer viewing duration) with right-column navigation than left. While this might have been the novelty factor at play -- people aren't used to seeing right-side navigation -- it may indicate that there's no reason not to put navigation on the right side of the page and use the left column for editorial content or ads.

Most news sites run articles with medium-length paragraphs -- somewhere (loosely) around 45-50 words, or two or three sentences.

Shorter paragraphs performed better in Eyetrack III research than longer ones. Our data revealed that stories with short paragraphs received twice as many overall eye fixations as those with longer paragraphs. The longer paragraph format seems to discourage viewing.

the standard one-column format performed better in terms of number of eye fixations

What about photos on article pages? It might surprise you that our test subjects typically looked at text elements before their eyes landed on an accompanying photo, just like on homepages. As noted earlier, the reverse behavior (photos first) occurred in previous print eyetracking studies.

Finally, there's the use of summary descriptions (extended deck headlines, paragraph length) leading into articles. These were popular with our participants. When our testers encountered a story with a boldface introductory paragraph, 95 percent of them viewed all or part of it.

When people viewed an introductory paragraph for between 5 and 10 seconds -- as was often the case -- their average reading behavior of the rest of the article was about the same as when they viewed articles without a summary paragraph. The summary paragraph made no difference in terms of how much of the story was consumed.

The first thing we noticed is that people often ignore ads, but that depends a lot on placement. When they do gaze at an ad, it's usually for only 0.5 to 1.5 seconds. Good placement and the right format can improve those figures.

We found that ads in the top and left portions of a homepage received the most eye fixations. Right side ads didn't do as well, and ads at the bottom of the page were seen, typically, by only a small percentage of people.

Close proximity to popular editorial content really helped ads get seen. We noticed that when an ad was separated from editorial matter by either white space or a rule, the ad received fewer fixations than when there was no such barrier. Ads close to top-of-the-page headlines did well. A banner ad above the homepage flag didn't draw as many fixations as an ad that was below the flag and above editorial content.

Text ads were viewed most intently, of all the types we tested. On our test pages, text ads got an average eye duration time of nearly 7 seconds; the best display-type ad got only 1.6 seconds, on average.

Size matters. Bigger ads had a better chance of being seen. Small ads on the right side of homepages typically were seen by only one-third of our testers; the rest never once cast an eye on them. On article pages, "half-page" ads were the most intensely viewed by our test subjects. Yet, they were only seen 38 percent of the time; most people never looked at them. Article ads that got seen the most were ones inset into article text. "Skyscraper" ads (thin verticals running in the left or right column) came in third place.

USC's report also showed that while nearly 50% of Internet users never click on Internet ads (with 70% finding them annoying), only 55% would prefer Web advertising to paid content, surprisingly