I've been using Blur for several years now to remember my sign-in information for the various web-sites to which I subscribe and to block trackers. Blur excels at both functions. Recently I started having problems with Blur after the latest Firefox 55 update, so I called Blur support. The phone rang 3 times and a live person answered, what a surprise. I explained my situation and the tech immediately sent me email instructions on how to downgrade Firefox to a previous version that would work with Blur until Firefox made the necessary changes that will allow Blur to work with the latest Firefox update. I followed the instructions and now everything is working fine. You can't beat support like that. I'm sold on Blur and you will be too when you install it.