And you don’t have to communicate with other party at all. Finalize the trade only if you are satisfied with your purchase, or get your money back otherwise. Tochka is now a referral market – a referral is included in the market url above.
When the Peer Guardian project ended, its developer Phoenix Labs encouraged current Peer Guardian users to migrate to Peer Block.
Currently, the best free blocklist is provided by Wael.
Name, however this site has awful pop-ups and ads, so here’s a direct link to the blocklist.
Most of the good bittorrent clients support blocklists – for example Transmission or u Torrent.
I-Blocklist has a good selection of blocklists, but many are now “subscriber-only” ( / year).