No. Each receiver has to have it's own line from multiswitch. Using a splitter like that will not allow the receivers to choose the right polarity for the channel they're being set for. A splitter is commonly used to combine or separate and OTA feed with the sat feed, which btw, you can't do with the new MPEG4 setup. The other use is as described in the site you linked.
What they are talking about in their auction is taking each line from the sat dish (there are four in the triple) and splitting it so that one line feeds a receiver and the other feeds into another switch. Thus turning a four output scenario into an 8 output, or whatever the switch is capable of. So there would be 4 of those splitters and then the switch.