Enters another forum message

• Announces again, in a way
• Puts back on one's blog
• Shares, as a friend's Facebook message
• Internet memes, often
• Content that has already been shared, as on a Reddit forum
• Shares on Facebook, maybe
• Puts on the message board again
• Shares on Tumblr, say

Wiktionary Word definitions in Wiktionary
vb. (en-third-person singular of: repost )