It's already down, omg. I hope it's just temporary :(
Edit: seems like there's just too much activity on it. I briefly reached the login page, but after entering my credentials, I got the same error. Guess we're safe for now.
This was a Romanian tracker, and it was pretty much the most popular one (or at least that I know of), so I am pretty sure there was a lot of local content as well. Movies also always had Romanian subtitles IIRC, so it was a great source for anyone not having a really good English comprehension to fiddle around.
There surely are other trackers as well that I'm not aware of or there's Romanian content on other international ones, but the community there was quite impressive - you always knew you could source some good quality stuff.
For me, personally, FL was pretty much my go-to whenever I wanted to get something that I couldn't source for free.
FileList.io shutting down by the end of the year :( UPDATE: not anymore :) (filelist.io)
One of the best private trackers out there. Sorry to see it go… You can read the reasons why in the link (in Romanian and English)....