I built hbd2ufrom.us after discovering some of the millions of personal birthday videos on Youtube. These heartfelt and, at times, intimate greetings were originally meant for a particular person. But through the lens of hbd2u, it's like a stranger is wishing you a happy birthday.
Because I wanted to the videos to be front and center, I kept the interface extremely minimal. The home screen is a simple prompt to enter a name. After that, you are taken directly to a random full screen video of someone wishing you a happy birthday.
I wrote an algorithm that narrows the results to low definition videos with relatively few views. Although not perfect everytime, the results tend to reveal videos that feel personal and amateur. I'm always working on perfecting the algorithm to bring out the best results.