As I've mentioned in another HN thread, I've been using youtube-dl to back up YouTube videos that are important to me since it's increasingly obvious that YouTube is merely a profit machine that would delete all of its user's videos in one fell swoop if they made an extra buck off it. I've also begun to back up some blogs that have vast mounts of great content, but I've found that HTTrack is... well, terrible. That's not to say it doesn't technically do its job, but it's way too aggressive. I wan't something that's easier to configure and can do a better job of taking "snapshots" of blog entries while blocking ads, javascripts, being able to resume properly if my power goes out, etc.