Congratulations! If you've been invited to this studio, you now know what invite-spamming feels like. Invite-spamming is when you go through your followers/following list and indiscriminately invite everyone on it to a studio, regardless of whether they obviously don't want you to. News flash: This is annoying. Please don't invite people randomly like this. Next time, please ask or check to see if it's okay to invite someone to a certain studio before spamming them with unwanted requests.
As for this studio, well, obviously it's not a serious studio and there's no obligation to join. You can choose to ignore the invite (but please do still keep in mind the point it's trying to make!) or accept the invite and help spread the word about invite-spamming by inviting a bunch more people, particularly the ones who constantly invite-spam YOU. >:D
Sincerely, @loves2color (a frequent victim of invite-spamming D:)
(And if you've specifically requested not to be invite-spammed, please don't get offended if you were invited here. It's not serious. X3)
(Also, this studio will probably get deleted after a while once the word has been spread. X3)
Crowy was here