Dreamwidth Questions

Is it possible to subscribe to LJs on DW if the LJ user has not created an Open ID? That is, I could just read all the journals I'm interested in just by reading my circle on DW. I thought the DW people were talking about this at one point, but from what I can see it doesn't exist.

Some DW users cross-post to LJ, but on LJ there's a line at the bottom that says, "read replies/comment on DW here" and there's a link. Do these users go in and edit every LJ entry so it says that? Or is there a way to make it pop up automatically?

Thanks in advance for any help.