Too high for Nate
Lots of sites, both professional and otherwise, seem to be using a double-hyphen when they mean to use an em dash. It’s as if they know that they need a long dash, but can’t be arsed to insert one.
The double-hyphen looks hideous, but it’s as if I should give them credit for trying. How about trying a bit harder and typing ALT+0151 (on the number keypad, not the top row). Or if you’re in WordPress (I am, don’t you know), hit the Insert Custom Character button sporting a Ω symbol, having hit the Show/Hide Kitchen Sink button). The em dash can be found on the second row, fifth symbol from the right.
Here you’ll find more on the correct use of hyphens, en dashes and em dashes.