response: Instagram is a photo sharing app and is used on mobile, the Internet, and desktop. The users can share pictures and videos.
original_response: Instagram is a photo sharing app and is used on mobile, internet and desktop. The users will share pictures and video.
history: I use social media a lot, but mainly Facebook and Twitter.  I have an Instagram account, but don't really understand why it's so popular.
knowledge: Instagram is a mobile, desktop, and Internet-based photo-sharing application and service that allows users to share pictures and videos either publicly, or privately to pre-approved followers.