Two different numbers get quoted at bloggers constantly, one describing who links to a site and how much weight those linking sites carry, the other describing how many people actually turn up. Vickib takes them apart, shows where the two track each other, and names the awkward exceptions that break the pattern in both directions.
Her post on choosing search phrases treats the work as an ongoing discipline rather than a job to finish, and admits how badly it competes for attention in a week already full of money worries and small emergencies.
The most practical piece helps you recognise comment spam, which matters because approving it quietly damages the thing you are trying to build.
There is also a set of quotations she has clearly kept for years rather than gathered for the post.
Four posts altogether. Read the one about the two numbers if either has ever confused you, and the spam piece before you approve another comment on your own blog.