that particular platform worked differently. it was targeted tweets, being sent out to people whose tweets matched a certain keyword or phrase i was interested in targeting. the power of the method was that responses (@ repliies) were sent automatically and immediately after a person said something. so it looked VERY natural and real.
unfortunately, the platform i used at the time had to switch to a manual method of operation. it could no longer send @ replies automatically. you had to go in, look at the messages it matched and then choose to send your message one at a time. this made it a lot less effective so i stopped using it.
it sounds like your bufferapp does something else entirely. it lets you basically setup tweets for a whole day or month or whatever and have them scheduled to go out. i’m not a fan of that approach because the tweets just aren’t natural…kinda like i don’t use follow-up campaigns in email and prefer to do broadcasts. they’re just more effective and people seem to be able to sense the “staleness” of a scheduled message.