Data Search is exactly what it sounds like: searching for data, either on an individual node or the entire Matrix. You can search for anything, provided it exists on the Matrix at all. The Data Search table is on p. 230 of SR4A, not sure about regular SR4.
Looking-up reliable information on blood spirits, which you can bet the Azzies actively suppress, is a threshold 24 Data Search + Browse test with an interval of 1 minute and each roll at -1. That's assuming you're searching the entire Matrix; it would be much quicker if you broke into some kind of Azzie magical database but that has its own issues...
Gangs would probably be threshold 12 with no roll penalty as it's not exactly common knowledge but nobody's actively hiding it either.
As it looks like Invisible Castle's going to be down for a while, perhaps we should do rolls through here in the meantime: rolz.org/group
I've opened a lobby titled "Soulless In Seattle". Castle's definitely better, but this will have to do for now.

Quoting this in case people missed it. It's an acceptable substitute so we're not twiddling our thumbs until IC comes back up

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