Hat tip to SteamedPenguin for passing along this oldie but goodie:
Rules for Good Grammar #4.
(1) Don’t use no double negatives.
(2) Make each pronoun agree with their antecedents.
(3) Join clauses good, like a conjunction should.
(4) About them sentence fragments.
(5) When dangling, watch your participles.
(6) Verbs has got to agree with their subjects.
(7) Just between you and i, case is important.
(8) Don’t write run-on sentences when they are hard to read.
(9) Don’t use commas, which aren’t necessary.
(10) Try to not ever split infinitives.
(11) It is important to use your apostrophe’s correctly.
(12) Proofread your writing to see if you any words out.
(13) Correct speling is essential.
(14) A preposition is something you never end a sentence with.
(15) While a transcendant vocabulary is laudable, one must be
eternally careful so that the calculated objective of communication does not
become ensconsed in obscurity. In other words, eschew obfuscation.