There are no Freeleech parameter or Freeleech search option @ picture browser...However you can search through Advance Settings:
Sort by: Torrent-Name >>> descending/ascending [order] >>> Search by: active/including dead/only dead
Category
Number of Files
Number of Comments
Upload-Date
Size
Times Snatched
Number of Seeder
Number of Leecher
Uploader
Seed Bonus Points
Screenshot.pngThis will be a new source and feature if they implement to add Freeleech option in the Browser Field...