1. The last sentence in the first paragraph says, "After formatting your entries, why not add keywords (tags) to describe your entries?" This seems like a non sequitur to me, since people don't usually think of formatting and keywords at the same time.
2. In the Images bullet point under Common HTML Effects, it currently says:
(<img src=imageurl />)This should be changed to:
(<img src="imageurl" />)3. The last bullet point under HTML on LiveJournal currently has one link for "<lj-cut> and <lj user>" tags. These should be changed to two separate links, the way it is in the first paragraph (also explained here). Also, if you want to be nit-picky, the period should go outside of the closing parenthesis at the end of this sentence.
4. Does it make sense to have the three bullet points under Using a Downloadable Client? All three of those things can be done directly on the website, and the preceding sentence has already summarized what a client might do.