I'm a lifetime Dungeons and Dragons nerd. My father inducted me into geekdom from a young age, and is still the dungeon master of what could very well be the longest running Dungeons and Dragons campaign in the game's history. I've been playing for probably 15 years now with about a half-dozen other guys. Because of life's inherent entropy, it is increasingly hard to get together, stay awake for an entire weekend, drink beer, and play "The Game" as the years progress.
Though nothing beats getting together in person, there are a few tools available to digitize the experience. I had been Google Docs for things like drawing maps to try and emulate tabletop sharing, but it always felt disjointed.
Sandstorm can be an excellent tool for a small group of people that need to share specific a set of SaaS-type web apps. I recently implemented Wikimedia Sandstorm to use as a tool to collectively keep track of important game events and things. I EVEN BUILT A THING.
dieStorm - The multiuser dice rolling application.
This project started out as a demo for a presentation I was to give at a conference. You can read more about it on Github.