Text messaging is supposed to be informal and a way to get past all the formalities of a phone call. It's great because you can get straight to the point and state your reason for contact without having to get off-track with the small-talk that comes with working your way into a phone conversation.

I usually try to be clear in my text massages that the conversation is over, but more often than not, either me or the other party will just stop responding. This can happen for a multitude of reasons, we get distracted or busy with the work and things that are going on directly in front of us or we simply feel the conversation is over and there is no need to "properly" end the conversation. Many times, it also can depend on who I'm talking to. Many of my girlfriends and I have rolling conversations that we pick up whenever we get around to it via text messaging. My fiance and I text regularly because he is out of town a lot and if we are into a deep conversation via text, we'll make sure to specify that the conversation is over and one or both of us is done for the night or at that particular time of the day. It really depends on your relationship with the person you're texting and how yall operate.

I still maintain, though, that texting is meant to be informal, so in most cases, no it is not rude.