19 Things You Didn't Know You Could Do on Facebook by Jokowi Seruu - HTML preview

2. Disable the Facebook Messages “Seen” read receipt.

• Those pesky read receipts RUIN lives. If you’re the type of person who doesn’t want to reply because you’re ~not in the mood~, then you should disable “Seen” receipts so people don’t know you’re ignoring them.
• Download the Facebook Unseen Chrome extension or install Chat Undetected for Firefox and Internet Explorer. The downside? You won’t be able to see when people have read your messages.