Leads Of Stock Brokers Collected In Online Blog

we have an online stock market blog where we review, compare different stock brokers of India. In this blog, we collect leads or contact details of users looking to open account with different stock brokers in india. further to it, we have affiliations with stock brokers to whom we supply these leads (Not necessarily with the broker for whom the user has shown interest)). in our terms and conditions, we have mentioned that users agree that we can share these leads with affiliated stock brokers. is it legal to take leads of stock brokers?