---ooc---
Here is the deal with 99.9% of the fiddly-I don't care. I care about the story of the game, but when it comes to where character sheets are, It's not an issue. Apposed rolls on a summon/bind test? You can roll them. I just don't want people taking advantage of the situation. Try to keep things legal. Try to be nice. Try to not be a pain, and enjoy your character and the story. Honestly, if people roll at home and reported their results I wouldn't care. I just want to tell a good story.
---ooc---
Matrix search
You look across the matrix, and you find nothing and everything. Everyone of these people have a full matrix life full of web posts, friend pages, IM's, and all the garbage of a life in Chicago. the only tie among all of them is their location. You do find have their home matrix host and know the houses physical location.