True, but it does make it much easier to make the case that they registered the domain a year ago with the intent of launching that brand and have been working on the idea ever since, while we know that Twitvid.io just spent a few days throwing this together a couple weeks ago. Hardly an airtight case for trademark protection.
I'm not saying what they did is right, as it clearly isn't, but I agree with axod; Twitvid.io should just change their name and move on. They're going to fight a losing battle otherwise.
What I simply cannot understand, is why twitvid.io would launch, knowing that twitvid.com was out there. What did they think it would be used for? Selling flowers?
It's obvious that twitvid.com would become a competitor, and due to the service they both copied - twitpic.com - would look very similar to twitvid.io.
I'm not saying what they did is right, as it clearly isn't, but I agree with axod; Twitvid.io should just change their name and move on. They're going to fight a losing battle otherwise.