Weights - Can I have weights for each respondent for TURF Analysis?

Yes. Currently "Weights" associated with each response through the "Import External Data" module. In the future, you'll be able to assign weights to each individual response through the web interface.

How does the Engine use the weights?

In the TURF analysis module, (Top/Down Reach) the weight provided for a response is summed up for the set of respondents that fall into one particular "bucket" in the Top/Down Reach.