Option to hide already viewed threads & Display your liked threads?

Howdy! after browsing this site for over a week I tend to click on threads I have already viewed and see a lot of content that's almost duplicate. I was just wondering if we could have the option to hide already viewed content.

I'm a huge fan of the advanced search but I just think having this option would improve browsing experience when searching through 50 pages of threads since I only have 20 likes per day.

Also, I recently upgraded hard drives after mine crashed and I'm having trouble locating my already liked content unless I commented on the post.

Perhaps a page to displayed your liked threads for when you need to redownload all your content or find old files?