TV shows etc, normally targetted at teenagers,
persistently demanding viewers to send text messages from their mobile phone (cellphone), either to win prizes or simply cast a vote (for their favourite contestant, for example).
Some TV programmes seem to exist for this sole purpose, with a flimsy game show format as the pretext for the
programme, which is really quite incidental to the
persistent demand to text the show. Texts are normally charged at "£1, plus your standard network rate."