They conclude[…] the planet will have a final period of rotation between 56 and 88 days, depending on the assumed form of the dissipation function.

'How many other people are being similarly summoned?' he asked. 'By emissarial projection, only yourself.'

...something like words, or better, passwordlike names, those of newborn children or dead relatives.

The former, called Shippers (i.e. those who seek a love relationship depicted), are opposed by NoRomos, who do not want romance to take over the series.