For most people it's not hard to distinguish where the line is, because they have the ability to project how their actions would make them feel.

How exactly do you distinguish between a C and D class neighborhood, especially when looking online? 

Do I need to do something so that the source of cash deposits is easily distinguishable? 

I agree with @Jacqueline Carrington on this one. Self

I looked at the hardwood as being classified as all one "type" not distinguishable between float or glue.

For others, here is another topic that may be of interest: http://www.biggerpockets.com/forums/311/topics/144023-finders-fee-for-non-agents-illegalIn this court case, http://law.justia.com/cases/new-york/other-courts/2010/2010-20104.html there is a good discussion under the heading "Distinguishing Brokers and Finders" that is worth the few minutes it takes to read...

Social culture, accepting personal responsibility, educating oneself, not getting into trouble, enforcement and harsher punishments for gang-related and violent activity, responsible spending and even remotely decent financial choices (it's amazing how many people in the ghetto get weekly manicures and plasma TVs), additions, desire to work, access to food and heath care (mental healthcare included), safe childcare, etc. has to change before pretty buildings will improve a community.

I used an Attorney to set up the LLCs not because it's difficult to do it one self, but because I want someone to blame if there's a problem

What distinguishes your property from the identical one across the street? 

If you don’t have the words “Trust” as a title on an account, then these funds could be seized.These trust funds must also be attached to a property and/or person to distinguish them from each other.