What ethical dilemmas do marketing professionals face in gathering information on customer bases through smartphones and social media?

Assignment 1: Discussion—Information Gathering and Ethics in Marketing
Using the Argosy University online library resources or the Internet, research and read two articles on information gathering and ethics in marketing.
Respond to the following question:
What ethical dilemmas do marketing professionals face in gathering information on customer bases through smartphones and social media?
Submission Details:
By the due date assigned, in a minimum of 500 words, summarize and post your responses to this Discussion Area. Support your work by citing sources according to APA standards.
Through the end of the module, respond to at least two of your classmates’ posts and respond by drawing comparisons between their posts and yours.