Twitter this week unveiled its "mobile first" strategy, rolling out a brand new iPad app, updating Android and iOs apps, while simultaneously revamping the look of a user's profile on Twitter.com.

The most buzzworthy element of this redesign has been the addition of a large, Facebook cover photo-like header photo to one's profile, both on the website and within all mobile apps.

This header image also serves as a background image for the Twitter profile image, bio, location, and link.

The new profile design has rolled out to everyone, but the old Twitter profile design will remain in place until a user decides to upload a header image.

Many have already done so, and are happily showing off their new profile headers using the service.

Many are pointing out the new header's similarity to Facebook's cover photo, rolled out when Timeline was launched in 2011.

And much like when Facebook Timeline's cover photo was launched, some clever Twitter users have been coming up with neat header photo "hacks" to work their own profile picture into the design. This make their profiles look that much cooler.