The person tagged the bot in a reply. The post they tagged it in says:
@buildthis.bisks.net the firehose, but every post is a koi in a pond and the chattiest accounts are the fattest, laziest fish (via idea-mill)
The thread it's replying to, oldest first (this is the context "this" refers to):
@kumavis.me: @buildthis.bisks.net the firehose, but every post is a koi in a pond and the chattiest accounts are the fattest, laziest fish (via idea-mill)
mutual dispatched built