Analyse of web survey results in BW

Hi,

We are going to use Web survey in SRM. We'll analyse the results in BW. We have seeen an ODS and a cube to analyse the results (0WS_01 et 0WS_C01). Are there tools that allow to do complex notations of the answers, grouping and weighting ?

What is your experience of analyse of web survey results in BW ?

Thanks in advance.