Last month, Marketwatch.com announced that it would no longer even report click-through rates to its advertisers unless they specifically requested them.

Banner advertisements, on the other hand, have seen click-through rates fall to below 1 percent in recent months.

The description is often, but not always, displayed on search engine results pages, so it can affect click-through rates.

The ads can also garner click-through rates in the double digits.

The purpose of click-through rates is to capture customers' initial response to websites.

One piece of information that is easy to acquire, however, is the click-through rate.

The average click-through rate of 3% in the 1990s declined to 0.1%-0.3% by 2011.

Sunday appears to generate considerably higher click-through rates on average when compared to the rest of the week.

The placement and sequence of catalogs within each section is likely to impact the click-through rate for any particular catalog.

But even so, again, nothing has shown that this actually generates higher click-through rates and higher quality results.