'Sly-beetle' was last active on the wiki on Dec. 8th (15 days ago) and updated things relating to Dyson Spheres.
You are not blocked in any way. Please make sure you're actually logged in when you try to make any changes, it may not have automatically remembered you.
Some say that he's a CIA experiment that went wrong, and that he only eats cheese. All we know is that he's not The Stig - he's The Stig's American cousin.