The ability to see patterns across multiple columns at once is great! It makes looking through large sets easier when you can find something quickly instead having go back over each column one by one searching.
I wish there was some way we could have our own custom filters so certain things didn't show up but maybe this isn;t possible? Maybe someone else has found better ways around doing what i'm trying do here (custom filtering). We've been using visallo as part of other projects like analyzing social media posts from suspicious accounts etc., which means they may already know how to use their product best - however just knowing where your results come out will help people who aren't familiar much quicker without needing additional training/guides provided elsewhere online.