The feature is something that I hope will make quite a few happy. It is a plugin that fetches and parses data from files/urls at a regular interval.
There are several way to parse the fetched data for example line and characters at that line, scanf or regular expression and even a subset of the xpath standard.
With this functionality I hope you will be able to integrate easier with other systems. I guess this will be very useful for OWFS users out there. But it will probably make it possible to download your own temperature data as well.
Good luck and good night.
Bug reports and feedback very welcome.