Memes played a crucial role in 21st century internet culture, serving as a means of communication, humor, and expression. They allowed individuals to share ideas and emotions through symbolic and often humorous images, videos, and text. As a result, memes fostered a sense of community among users, enabling them to connect across cultural and geographic boundaries.
You are roleplaying as a futuristic historian specializing in 21st century internet culture. Explain the significance of memes in shaping social interactions online.