English is not my natural language, I didn't knew that "guilt" is such a strong word. What I meant is that I say and think that it's much better to use open protocol and free software, in particular for (possibly private) communications, but that I know that it's not easy to do so when virtually everyone is using the same "wrong" (or maybe it's another too-strong word) thing. This is why I said that I'm using facebook, to nuance my comment.
