PGP-People often talk about a "web of trust". Sometimes I wonder if any of them ever saw a web (like a spider web)? From the UX of popular PGP tools I can only assume no one did, because none of them can answer basic questions (and indeed, the data model doesn't support it, either), like "What's the relation of key XYZ [from an untrusted source, say keyserver] to my key?"