Disable the links in the post, so nobody clicks them by accident.
It looks like Avast crashes when you save a page to favorites. This should NOT be happening. By the way, This has been said by several people before but don't use two antivirus programs at the same time. They tend to conflict. Based on what you said alone that crash could be caused by such an incompatibility.
By the way, specify the version of your Avast and the OS. The last thing you want is one of the experts asking that question, then the thread gets forgotten.