why other interstes not hot?

i think for an interest to become hot, there should be many responses to it. your discussions got fewer responses because probably users here are not interested in the topic or they dont know what to reply to your topics... if for example your topic is asking about, "have you been a call center agent?" if there aren't many users here that are not call center agent, of course there will be few responses to it because they are not into that. just keep on posting discussions, try other subjects, and sometimes think of what is interesting to other people, not just what is interesting to you... sometimes also it takes a while for a discussion to get many responses...