The LiveJournal TrustFlow system is down, and may be so for a while. It is a victim of its own popularity: it made so many requests on LiveJournal's servers for people's friends list data that it endangered the performance and stability of LiveJournal.
However, I am working with the LJ staff towards a solution which allows me to fetch the same data with much less impact on LJ's servers - this solution is known as the LiveJournal Data Protocol. Once this is ready TrustFlow will be modified to use it, and will go live once again.
Some changes have been made to LiveJournal, and we hope you enjoy them! As we continue to improve the site on a daily basis to make your experience here better and faster, we would greatly appreciate your feedback about these changes. Please let us know what we can do for you!