Pretty nice plug-in for Chrome that adds the following features to PH:
1. Preview the products web page without leaving Product Hunt.
2. Highlight new products since last visit.
3. Highlight new comments since last visit or those posted in the last 10 minutes.
4. Quickly see which products have new comments since the last visit.
5. Star a product.
6. Tag a product. Either click the tag icon and use an input box with autosuggest use drag & drop to add tags. Tags are private unlike ProductHunt's native collections.
7. Add notes on the product page.
8. Highlight text on the product page.
9. No registration required although it is recommended.
10. Adds the product site's favicon to the listing. Click on it to preview the product page.
11. Hide a product that you have no interest in so it doesn't show up on the home page or more importantly when you are doing a bunch of similar searches. Want to see the hidden items again? Click on the 'Unhide' link on the top right of the page.
Made by @Ziinko, maybe he can answer some Q's!
Idea Stash