That’s fair! I’d recommend grabbing some of the featured freelech, even if you don’t want it for yourself, just because it’ll help with your ratio to seed that a few times when the download is free.
Also, they sent this message out the other day: “Torrents that are at least 40GiB are now automatically added to free leech.” So you could browse by file size, grab some large files and seed those.
Afraid not, and they sent out a message today saying that they’ve closed registrations for now.