Tracking what ideas I have viewed in the portal

I like to be able to vote on ideas but it is hard to keep track of ideas that I haven't voted for yet. Currently there are plenty of wonderful filters and ordering mechanisms. However, the only personal filters are 'My ideas' and 'My votes'. When I go through the Recent/Trending/Popular sorting I can easily get lost at what I have looked at as I page through.

My suggestions:

Have personal filters called 'Not viewed' and 'Not voted' or similar for all of the ideas you haven't seen and all of the ideas you haven't voted on.

When an idea has been opened have buttons for next/previous idea.