"Bump" = = = "bttt"........ 
Bump is used when someone wants to post a reply to a thread simply to "bump" it back to the top of the "Latest Posts" list so more visitors will see it. BTTT - "Back To The Top" is used interchangeably with "Bump".
Revised & Updated! -- THE LEXICON OF FREEREPUBLIC --
(FR dictionary, more help for newcomers!)