I've been using PPAs for ages. I've googled about it etc and I always keep finding suggestions to check how many users are using it. I've always tried to find that info, but I can't see it anywhere. For example: https://launchpad.net/~apt-fast/+archive/stable . I can't find any link to check user counts, comments etc.
Eventually I just give up and install. Now I decided to figure out this problem which is affecting my Ubuntu security (in theory anyway)
What do you check before adding a PPA?