When Avast blocks a website, it puts a popup oveererr the tab the site was supposed to open in, but the popup gives exactly zero useful information as to why the website was blocked. Did it score high on a risk assessment? Does it turn up on a list of phishing sites or botnet download sites? There's no way to know, because the popup gives no information, nor does it give you a link to anywhere that might offer that information. For all the information the popup gives, the website could have been blockoed because someone had dispepsia when they last viewed the url, and gave it a negative review.
Please add some way to view the criteria that causes Avast to block a website, and also a way for the user to choose whether the criteria given are what the user would use. In other words, the user should have the option to override the Avast block on a website if they choose to do so. As it is right now, the program does not even offer the option of allowing the user to choose for himself whether to accept the block or bypass it. Even if the bypass option requires going through a "yes, I know you think this is stupid" screen, it's still a better option than not allowing the user any choice at all.