The first two sentences are fine. I'd rethink the third sentence: Also, up voting and commenting is how you can help every reader uncover the best of the best b

The first two sentences are fine. I'd rethink the third sentence: Also, up voting and commenting is how you can help every reader uncover the best of the best by pushing those articles to the top of the list. Problems: (1) Most people have no idea what 'up voting' means. (2) The syntax is needlessly tangled. What about: "Vote for the articles you find most useful, and they'll rise to the top of the list."