There’s no doubt about it, celebrities drive interest and usage on the web. One of the biggest celebrities on Twitter, Justin Bieber, has joined another hot service: Viddy.

Whether you’re a Bieber fan or not, you have to respect the fact that someone with the size and type of following that he has is a huge grab for a service like Viddy. Bieber anecdotally asked Instagram for some kickbacks for joining its service, and Instagram declined. He joined anyway.

With over 21M followers on Twitter, this is a guy with serious influence, especially when it comes to teenage girls. He’s putting it to use now for Viddy:

Here’s Bieber’s first video on the service, and he already has 4,743 followers:

We’ve noted before that the ability to bring celebs like Snoop Dogg and T-Pain has been a huge advantage for Viddy, and this has been its tactic from day one.