A combination, of course. Let's say, "skimming with awareness of what I'm leaving on the page." If you've never seriously tried it, you might be amazed just how far you can push your reading speed on low-density material while still retaining 90-95% of what you care about.
The two key techniques for doing this effectively are to 1) eliminate subvocalization while reading, and 2) expand your field of vision so that you are reading sentences and paragraphs instead of words.
Of course, if you're reading contracts you're going to sign, you probably want to spend more time on each word.
Oh yes, of course... but how does one eliminate subvocalization. I find I can't take in information unless I vocalize it. Because of this I can't read sentences.
Reading, or skimming?