Go ahead and post them on dtube, although I have to mention that videos uploaded to dtube "disappear" (are removed from the dtube servers) after some months, leaving a post with a broken link on your steem blog... So I suppose it depends on what you are trying to accomplish with uploading to dtube. If you just want to get the chance at an extra upvote, I don't see any reason not to do it (particularly if you note that it is a repost from when you didn't have much visibility). On the other hand if you are doing this for some kind of archival purpose, or care if you end up with broken links on your blog, don't do it :) Or, alternatively, upload to youtube as an unlisted video, stick the youtube link in the body of the dtube post upload, and upload to dtube - that way when the dtube video is deleted you will still have the youtube link in the post body so the post isn't just a broken link in the future.

Great review here btw :) It is kind of nice to see a negative, steer clear type review - they are at least as useful as glowing reviews, but you never seem to see them. Cheers - Carl