As a common user throughout the surfing of the internet, you are meant to follow the basic rules, such as 1) you are agree not to conduct any scam activities throughout the site. 2) you are agree not to flooding the email account by sending scam likely emails, null objects, and virus hidden links, source, attachments, and so call them spam mails. 3) you are agree not to express with hate speech. 4) you are agree not to infringe other people's interllectual properties.