# Telegram Groups Notes > How Telegram groups, channels and usernames work, which settings reduce contact from strangers, and where mSpy's Telegram monitoring may fit. ## Guides - [Public Channels vs Private Groups: What Is the Difference?](https://telegram-groups-1eg.pages.dev/telegram-channels-vs-groups/): Telegram channels broadcast messages to subscribers, while groups allow members to communicate and participate in shared discussions. - [Telegram Usernames and Why Strangers Can Find Your Teen](https://telegram-groups-1eg.pages.dev/telegram-username-strangers/): A Telegram username can make a teenager easier to find without another person already having their phone number. - [Privacy Settings That Limit Who Can Add a Teen](https://telegram-groups-1eg.pages.dev/telegram-who-can-add-me-settings/): Telegram privacy controls can restrict who is able to add an account to groups and influence other contact opportunities, depending on the available settings. - [Large Groups and Link Sharing: What to Watch](https://telegram-groups-1eg.pages.dev/telegram-link-sharing-risks/): The main telegram link sharing risks come from losing control over who can enter a group, contact its members, or circulate its content. - [Agreeing on Rules for Messaging Apps at Home](https://telegram-groups-1eg.pages.dev/messaging-app-rules-at-home/): Effective messaging app rules at home establish clear expectations for privacy, respectful communication, group participation, and asking for help. ## About - [About Telegram Groups Notes](https://telegram-groups-1eg.pages.dev/about/): responsible use, how the site is funded and how guides are made ## Optional - [RSS feed](https://telegram-groups-1eg.pages.dev/feed.xml)