looks to me like night skiing has been stopped, at least until (if) there is more snow.
the cam on justborovets.com was showing the slopes lit up at night till 3 days ago... lights haven't been on since ?
I was in finland ( ruka) about 2 years ago,They keep the slopes open untill 19.00 local,it was free and good fun.
If i had to be negative about finland i`d say the weather drops down to -32 on a regular bassis and also the runs are to short.