But it's obvious to me that "sandbag" is one word. Last week, the City of Ithaca was offering sandbags to area residents in low-lying areas that might be flooded, and I winced every time I saw people talking about "sand bags" instead of "sandbags."
Maybe if I could figure out why it's obvious to me that "sandbag" is right and "website" is wrong, I could learn to get over the "wrong" spellings.
When I'm writing for certain publications, I learn their "wrong" spellings. TidBITS, for example, long-ago switched to "email" (which makes me see "Emil") and still sticks with "Web site" (as opposed to "web site") on the grounds that it's the "World Wide Web," a proper noun. For the same reason, I believe in "the Internet," not "internet," but don't buy "Web."
I admit it, I'm weird. But then, I'm a linguist.