I use LW Pro & do notice the difference. I just don't like to push Pro's attributes too much. The odd person responds that they don't notice any difference. But I do, as do a number of other members on the forum. Pro's performance suits me well & is better.
It is disappointing that people should share pro. Just as in the same way it's been reported on places like ebay. Gads the program only costs $18.88 US. How many Big Macs can you buy with that.
Keep in mind that many gnutella programs use LW's development & design. If not for LW, then those others wouldn't be there. LW is open source & doesn't charge money for its design to these other developers. Pro is what supports LW.