Hey,
I had earlier blogged about a greasemonkey script that allowed copy-pasting links on the Google Search Result page. The Google script changed the href of links in the search page so that the clicks to results can be counted. The script simple parses all links that have a class "l", and attaches a onmousedown event to correct the damage done by the google script.
However, disabling this also disables Google Web History, something that I extensively use. Also, I use Snap Links Firefox extension to quickly open multiple links in the background. The greasemonkey disables web history in this case also. Hence, I modified the script a little so that Google Web History is enabled, without compromising on the Web History feature.
The script now checks the mouse button clicked (lines 32-24) , and if it was a right click, does not change the google URLs to the original URLs. Also, to allow plugins like Snap links to use Web History feature, the links are changed to the web history links as soon as the page is loaded. This is achieved using a timeout in lines 69 to 71. Hence, whenever the user clicks the link, or a parser runs through the page, hyperlink gets redirected via the web history.
I now have Snap Links and other screen scrapers working perfectly fine, without compromising the ability to copy links.