What happens when I link Twitter to Facebook? Does a Facebook entry get automatically turned into a tweet? If so, what if the Facebook post exceeds Twitter's character limitation?

You can still use the exact same method.

You might not be able to find the source of the video at all, depending on where exactly the video was from. Some people upload videos from their computer or...

Burn it to a dual layer (DL) DVD - but you need a burner capable of burning dual layer disks.

No, but it will go somewhere near the top of the page.

Tumblr currently offers no direct way to see if a post by another user has been edited. But if a post is reblogged, and the original post is then edited,...

It's worse than you think - your edits on Facebook not only don't make it to Twitter, but you can't edit the tweets because they didn't originate in your Twitter...

Yes, tag Facebook post and Twitter post together, or just copy your post on Facebook or Twitter.

Sometimes Twitter limits on tweets, direct messages and followers per day to reduce spammers and reduce error pages. Read How to Get Out of Twitter Jail.

The reply should automatically show up on your homepage. No need to select a special setting.

Navigate to your post then click Share and Share on a friend's profile. Then enter your friends' name when prompted to share the post on their profile.