 First, during the election period – that is, the period between the day the writ of election is issued and the start of polling day – political parties, candidates or election agents may use the Internet to further candidates' campaigns, including using websites, chat rooms or discussion forums, video and photograph sharing or hosting websites, e-mail, micro-blog posts (such as Twitter), SMS and MMS messages, digital audio and video files, electronic media applications, and blogs and social networking services (such as Facebook).Election advertising sent by e-mail, micro-blog post, SMS or MMS must contain a functioning e-mail address or mobile phone number to enable recipients to indicate that they do not wish to receive further messages from the sender.However, the Internet may not be used to publish the following