Simply hides the titles that come from sites you've flagged for filtering e.g:

Unrelated Nonsense Article [Y] (arstechnica.com)

becomes

. [ARSTECHNICA.COM FILTERED] .

because you clicked the [Y] symbol for filtering

hovering over the dots shows

[UNDO] [ARSTECHNICA.COM FILTERED] [PREVIEW]



The post item (#/upvotes/comments) still appears in your hacker news feed, the script replaces the title with greyed out less prominent text.

hides promo posts by default.

Easily filter the sites in place by pressing [Y] next to each submission

Easily preview a filtered item's title by hovering over upvote button

Easily revert/undo a previously filtered site