Agreed, I think a little clarification is in order on exactly what Stoner is.
From my understanding "Stoner" was born when some record label guy used the term to describe the music of Kyuss. He said Kyuss music was music that stoners like or something to that effect. The term kinda stuck for some reason.
First off, Stoner rock doesn't necessarily have to be about getting high. If it is about getting high and flying through space while high then you get bonus points

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What I feel a lot of Stoner music has is a slower tempo than a lot of metal, but with the heaviness that metal has. It is an extension of proto metal, punk, and blues based rock. To me the music must have a cool groove and the groove repeats almost like a drone that works its way into your head.
In some cases the repeated, heavy drone puts me in a state that is not unlike being stoned. If I had to compare it to something it might be like meditation where "Om" is repeated over and over ("Om" just happens to be the name of a band that Al Cisneros is in, coincidence?)
All this is not to say that all Stoner music is like that. The absolute banger of an album posted above (Buffalo-Volcanic Rock) has some serious energy. Orange Goblin-Time Traveling Blues is another more uptempo Stoner masterpiece.
So while a lot of Stoner music is newer, simply because the genre is newer, that doesn't mean that music from the 70's can't be included.
@Mystic mentioned Leaf Hound, Sir Lord Baltimore, and Buffalo. These type of bands absolutely influenced all of the Stoner bands that are around today and time and time again newer bands have paid tribute to the past masters. One only needs to look at how many times Black Sabbath has been covered to see that the 70's music is at the core of Stoner.
So with that said I absolutely will be including past classics in this thread mixed with newer music. The genre is pretty wide, but let's not get carried away. I think first and foremost the music should be heavy, not necessarily fast, but heavy. You dig?