I'm not Vlad (the person you asked), but I use Lenses almost all the time. They have changed how I search for user generated content completely. I used to add "site:reddit.com" to at least 2/3 of my searches and the Forum Lense does the same for me while including many other discussion boards. I love it.

As an example: I'm playing Diablo 4 at the moment and getting info about the convoluted systems can be a chore. For example: I didn't know that I have to do at least a Tier 3 Nightmare Dungeon to unlock Sigil Crafting. None of the usual pages mentioned that. The Forum Lense saved me a lot of time because users discussing it mentioned it quite a lot.