It means to post in a thread which has not been posted in for at least one month.

BotServ>: BotServ allows you to have a bot on your own channel.
<BotServ>: It has been created for users that can't host or
<BotServ>: configure a bot, or for use on networks that don't
<BotServ>: allow users' bot. Available commands are listed
<BotServ>: below; to use them, type /msg BotServ command. For
<BotServ>: more information on a specific command, type /msg
<BotServ>: BotServ HELP command.
<BotServ>: BOTLIST Lists available bots
<BotServ>: ASSIGN Assigns a bot to a channel
<BotServ>: SET Configures bot options
<BotServ>: KICK Configures kickers
<BotServ>: BADWORDS Maintains bad words list
<BotServ>: ACT Makes the bot do the equivalent of a "/me" command
<BotServ>: INFO Allows you to see BotServ information about a channel or a bot
<BotServ>: SAY Makes the bot say the given text on the given channel
<BotServ>: UNASSIGN Unassigns a bot from a channel
<BotServ>: Bot will join a channel whenever there is at least
<BotServ>: 1 user(s) on it.

I traded for it