Could it happen to you that you talk to someone, and after you talk to him, you become not interested for what ever reason? and what would you do then? It happened to me a couple of times (all the time girls replied me); I would talk to some girls, they first replied, and then nothing. I didn't blame them, it just happened they weren't interested and they expressed it in not replying, which was fine to me. They could have not replied me in the first place, but they chose to reply first but then not. I guess the cyber world gives you more room to ignore people, which isn't nice, but also saying you aren't interested isn't nice either.