I have made my feelings regarding crocs quite clear in Kate’s Adventures. In fact, they relate to two amusing stories. Check out this entry first, then this one. You will have a very clear idea of how I feel about these abominable, hideous shoes.
Therefore, I was quite delighted to see a feature in Metro condemning them and recommending shoes that offer just as much comfort, but are much more attractive. I was not, however, delighted to see the grammar in the headline:
Die crocs die.
It should be Die, crocs, die. The statements are directed at the crocs, so they should be separated by commas.
This reminded me of Sideshow Bob’s tattoo on The Simpsons. His tattoo reads, “Die, Bart, Die,” and even though I haven’t seen that episode in years, I could have sworn that the commas were included in the tattoo.
I did a Google Image search, and this is the best image of him with the tattoo showing that I could find:
It doesn’t look like any commas are used, but there may be a period at the end. Technically, that period isn’t even necessary.
Interestingly, I remember in that episode that he tells the parole committee that the tattoo reads, “Die Bart, Die,” in German. He pronounces it with the commas as I placed them just now. Perhaps that means that there were never any commas, which allowed him to pronounce the sentence the way he did.
The Grammar Vandal 
“It doesn’t look like any commas are used…”
It takes only one more key stroke to say “It doesn’t look as if any commas are used…”
We have to be careful about associating commas with the way we pronounce spoken language. The technical function of commas is as architectural markers in the sentence, separating independent clauses, not as “breath markers,” as most of us have been led to believe.
When speaking about Crocs, they should certainly be capitalized, being a proper noun, no? Come, come, Grammar Vandal! I would expect more of you!
Hmmm. I guess that “Crocs” is a proper name, after all. It’s tough when a specific style is exclusive to one brand. I’ve assumed that different brands created the shoes, and that “crocs” was merely a style, much like “flip-flops” or “Mary Janes.” If “Crocs” is the name of the company, it should be capitalized.