C4C Meaning in Chat or Text Messages Online

C4C is an internet slang that stands for "Comment for Comment." It is commonly used on social media platforms like Instagram, where users ask others to comment on their posts in exchange for commenting on theirs. This is a way to increase engagement and visibility on their posts.

For example, a user might post a photo on Instagram with the caption "C4C, drop a comment and I'll comment on your latest post!" This encourages other users to engage with their content and also helps the user gain more visibility on the platform.