[cwkoss]

Need some sort of deterministic bias based on user ID? Each user offset 1*Math.rand(hashseed) miles from location at randVector(hashseed)

[pavel_lishin]

Why does it have to be deterministic per-user? Why not completely randomized across every user?

[cwkoss]

I guess depends on the application. Consistent offset would allow measurement of distances, but that does leak some information, so perhaps all-random is better for many uses.