It is a bit odd. I think maybe because people aren't familiar with it, it comes off as a promotion? Maybe try editing something into the post body like "DreamWidth is a LiveJournal-like journaling site which sprung up in the wake of LiveJournal censorship in the late aughts. Its flagship site is still focused on an ad-free and user-focused experience, or host it yourself. Check it out if you miss the golden days of LiveJournal."