  We present a description of the automated system used by RoboNet to
prioritise follow up observations of microlensing events to search for planets.
The system keeps an up-to-date record of all public data from OGLE and MOA
together with any existing RoboNet data and produces new PSPL fits whenever new
data arrives. It then uses these fits to predict the current or future
magnitudes of events, and selects those to observe which will maximise the
probability of detecting planets for a given telescope and observing time. The
system drives the RoboNet telescopes automatically based on these priorities,
but it is also designed to be used interactively by human observers. The
prioritisation options, such as telescope/instrument parameters, observing
conditions and available time can all be controlled via a web-form, and the
output target list can also be customised and sorted to show the parameters
that the user desires.
  The interactive interface is available at http://www.artemis-uk.org/web-PLOP/
