@Seij hashtags let you find posts (or filter them out) that you are interested in. For example,, I have one pinned column that is politics related hashtags because I am interested in that. You will see boosts from your friends in your friends column, even if the item boosted is not a friend's post. Some one else will need to explain the sanitizer. I have yet to use it and don't feel qualified to try and explain it.