This document analyzes WhatsApp usage through a study of 120 Mumbai users. The objectives were to identify user reactions, reasons for use, impacts, and benefits/limitations of WhatsApp. Most users were male, aged 15-25, and using WhatsApp over 20 times daily for chatting, sharing photos/videos, and accessing news/information. While allowing constant connection, WhatsApp was found to reduce privacy and face-to-face interaction, potentially causing addiction, spamming, stress, and injuries from overuse. Both advantages like maintaining relationships and disadvantages like reduced privacy and increased addiction were discussed.