Yes, I do it on here as well. It's nothing personal to anyone. It is usually when I'm overwhelmed or busy with something (same reaction). I don't cut off all contact, it just means conversations are mostly off limits. Most of my Facebook friends understand it, or at least put up with it, lol. It doesn't mean if they ever needed me that I wouldn't be there for them though, I will always be there for them if they really needed me that much. Just for problem solving though and no listening. If they needed somewhere to stay, I trusted them enough, and I had a place to stay that would allow it then I would let them, because most of my friends (and my boyfriend at the time) never offered me that when I needed it, which disappointed me greatly. People are disappointing, I can say that up front in front of them too.
As for listening though, with a romantic partner there's an exception in that I would listen to them.
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I've left WP.