Well, newspapers, at any rate, don't have extra line-spacing between paragraphs. Paragraph breaks are indicated by first-line indentation only. So I stand at least partially corrected.Even if the first lines of paragraphs are indented, there should always be a bit of space between paragraphs.. . . It's a bit easier to read, yes. But what I really wish people would get more in the habit of doing is two hard returns after the end of a paragraph, avoiding the big block of text.
Good god, no!
I have yet to see a printed novel that has extra space between paragraphs; I see it in ebooks all the time though, unfortunately. It looks awful and is a waste of space.
In professional typography, we don't use "spaces" between lines of type. The distance from the base of a line of text to the ones above and below it is measured in "leading" (rhymes with bedding). For example, 10-point type is usually set with 12-point leading, making six lines per vertical inch. But that's just a general rule.But printed novels aren’t quite single-space between lines, aren't they? They’re more like 1.5 space between lines, right?