I've noticed some websites are frequently using a very specific semi-responsive technique but I'm not sure what to call it. Here are 2 examples:
Example 1: http://www.firestonetire.com
In both examples they have a "fixed width" desktop site, but at mobile sizes they have a fluid design. In example 1, it's all the same site, whereas in example 2, it's a separate site for mobile.
Is there a name for this? Essentially they are recognizing that mobile phones have a variety of sizes but are not really addressing screens in the mid-size tablet range very well. I've been asked by others if this is responsive and I can't really give a good answer other than "not really, but sort of."