Bump?

[Old Garage-Bander]

Not so new to TB, but I do have a noobee question.
I sometimes see someone respond to a post with "Bump" or "+1."
Could someone decode please? Is this something from social media? (I don't tweet or face-thing?)
Thanks.

 

[tkonbass]

+1 = I agree or me too.

+1000 = I really agree.

Bump or Up or TTT = move an ad to the top of the listings or renew (as on Craigslist).

 

[Old Garage-Bander]

+1 = I agree or me too.

+1000 = I really agree.

Bump or Up or TTT = move an ad to the top of the listings or renew (as on Craigslist).

Thanks. It all makes sense now.