There seems to be a weird bug with Google's search results, which highly discourages people from clicking on the second search result.
Typically, a searcher will search for search for something, go to the first result and if unhappy with that result, they will click the back button. After they click the back button, they may try to click on the second search result. In this case, Google is making it a bit hard for the user to click on that second search result.
What happens is that Google will push down the second search result when you click on it and load up a "Get more results from the past 24 hours" link, in its place.
Try it yourself, search for [search engine roundtable], then click on the first result. Then click your browser's back button. When the search results load again, click on the second result and you should see the "Get more results from the past 24 hours" link come up in its place.
Here is a video demo of this happening to me on Google Chrome on my Mac:
Many are complaining about this in the forums.