There are many advantages of being a citizen on Chobots: 

• You get a bigger speech bubble so others notice you
• You can preform special magic
• You can purchase many special items for your chobot, your house, pets, robots, etc.
• You can enter full rooms
• NEW! You get access to the secret room for citizens only!
• NEW! You get access to the secret catalog/items for citizens only! 
• You can play special citizen games
• And lastly, you can draw with graffiti in the Underground location!

You can buy your citizenship in the form of one month, six months, or twelve months.
Usually with each purchase you can get a special item, a bug bonus, and sometimes a discount.
The prices may vary from about $8.00, to $30.00, and then to $50.00 (In order, just an approximation).


You can also get a citizenship for free by winning specific contests from the official Chobots blog, or from a moderator's blog. Sometimes you can get a special item or bug bonus with that, too!