You've Got Mail
Back in 1998, a major Hollywood studio thought it would be a good idea to make a movie built around an AOL email notification. That sounded like a horrible idea to me, but the film went on to make over a quarter of a billion dollars. Which is why they don’t let me make movies.
But perhaps some part of the film’s success is due to this minimalist site complete with character bios, Real Audio commentary from director Nora Ephron, and even a section where people recalled their own romantic adventures that were sparked over email! Ah, the innocent time of online romance before all those Craigslist murders.