From 11:00PM PDT on Friday, July 1 until 5:00AM PDT on Saturday, July 2, the Shmoop engineering elves will be making tweaks and improvements to the site. That means Shmoop will be unavailable for use during that time. Thanks for your patience!
Biondello is another one of Lucentio's servants, though he's not as "trusty" or as interesting as Tranio. He's obedient to Lucentio and basically does what he's told when Lucentio orders him to pretend not to know that Tranio (disguised as Lucentio) is not his real master. Biondello's willingness to play along with Lucentio's scheme enables Tranio's sanctioned unruliness.