Copyrights are automatic. You have to apply for a Trademark. It really doesn't matter if you update it or not. Some do, some don't. Still means the same thing. Copyrighted to Blockland LLC. Now and forever.
Edit: Also, because Badspot made Blockland a registered LLC Entity, he is not subject to personal liability for any crap Blockland creates. So if you were to sue him, say for example Blockland broke your monitor. You cannot sue him personally. His personal assets, etc. are NOT at risk. You have to sue the LLC entity, which you are going to have a fun time doing. Fun facts. If you purchased Blockland in 2009, chances are, your 20 dollars to Badspot went to the creation fees of the LLC. This is ~250 dollars depending on your state. Just a fun fact for those who are curious about why there is an LLC on the end of Blockland.