Might I also suggest you get Spybot - Search & Destroy http://www.safer-networking.org/en/mirrors/index.html (FREE)

And to add to the tool list you might also consider:
Peerguardian: http://peerguardian.methlabs.org/pg2.html (FREE) which will detect any organisations trying to access your port 6346 & block them.

Adware, Spybot & Peerguardian I'd recommend as safe utilities to use with LW. Many others don't work properly or have spyware themselves lol Magnet links are sometimes seen as spywares so the above utilities should not give you incorrect findings. But make sure your utilities are up to date.

(Oh by the way, some other p2p share programs do have either spyware or adware. LW does not!)