CLM enables admins to disable author links, open links in new window, and remove the nofollow tag from links that are left in comments by visitors.
The CLM plugin allows wordpress admins to have more control over the links left by users who leave comments on their blogs. Admins are provided with the ability to remove all author links from comments unless the user has made an admin specified number of comments. You are also provided with the ability to override that setting with whitelist and blacklist features. The full list of features provided by the CLM plugin is below