Like OLD suspect list of url's probably mostly foreign news channels. Could be a hoax as Raggy suggested to get you to download malware. Or it could be a company providing pay to view services. In any event I suspect that you will not be missing much by giving it a wide berth
I have freeview but had to have a adjustable 4 way mast head amplifier fitted to distribute it around the house it all works fine we are on the edge of transmissions areas and have scots pine trees near to our ariel.
The installer tests the ariel for time outs on various channels to check soundness of installation the original ariel was used.