YouTube Fullscreen Adblock is a Chrome add-on developed by Christian Moldovan. This free program falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. Its main purpose is to open YouTube videos in fullscreen mode in order to avoid ads.

With YouTube Fullscreen Adblock, you no longer have to deal with annoying advertisements that interrupt your viewing experience. By opening videos in the embedded player instead of the normal link, this add-on effectively bypasses ads, allowing you to enjoy uninterrupted playback.

It's important to note that while this add-on blocks ads, it also prevents you from accessing the comments section of the video. So if you're someone who enjoys reading and participating in discussions, you may find this limitation to be a drawback.

Overall, YouTube Fullscreen Adblock is a handy tool for those who want to watch YouTube videos without the annoyance of ads. Just keep in mind that you won't have access to the comments section when using this add-on.