I’ve seen an uptick in anonymous, pseudonymous and first-name-only comments recently. Some of them are really good, but I won’t post without a real name, first and last — clearly spelled out when you try to post. Here is the full Media Nation comments policy along with some of my reasons for implementing it.
In some cases, it may just be a matter of how you registered with WordPress. (Note: Registration is not necessary.) If you think that’s you, please read this.