I'm now using Tinfoil for Facebook, it's easily crashed (e.g. clicking on a Message notification closes it) and it doesn't like pasting links into a post, but otherwise it does mean I can still access FB on my FP1.
Now I'm having Twitter problems too. Their app (v6.29.0) takes ages to load, and until you've waited for the Feed to refresh and update, you can forget about clicking on Notifications, it just won't load. After reading those, don't click Home, click Back, or it will also get upset.
So, are there any fixes or alternative platforms to access Twitter?