Rated 4 out of 5 stars
This extension works well but needs two more features to get a full five stars from me:
1) When you ctrl-c to copy when nothing is selected it should copy the page url and title (in your favorite format) to the clipboard. There is another extension called CopyFixer that does this but it doesn't allow you to specify the formatting as nicely as CoLT
2) Add access to the meta description. It would be nice to get a long format description about the page including the meta description for when you want to link to the page with a blurb about the page as well. The "Copy Title and Description" extension allows the meta description to be copied from a context menu, but it doesn't have good control over the formatting like CoLT does.