Those were the good old days... I used to use it a lot because of its great interface and movie archive. I rated 3000 movies on Letterboxd and was able to add many new ones to my watchlist. Thanks to Letterboxd, I was aware of the existence of many quality movies. I used to make lists for the girl I loved. Now neither that girl nor the desire to watch movies is in my life. Letterboxd just sits there, with memories that hurt.
Letterboxd is my backup movie and TV review site. I take my reviews from MUBI and import them into letterboxd. Letterboxd has a lot more users than MUBI, but it's not as flexible in terms of getting TV shows in there. You have to go to TMDb and create the entry there and then wait for it to populate to Letterbox.