Originally Posted by
Captain Douche
MD5 is useless, Rainbow Tables can easily crack it without a problem.
If it's forum based, I'd would suggest using REST API (URL API), which I do believe vBulletin supports. If in-game, I'd suggest cloud saving so no one has to store anything on their computers and it'll be more real-time and faster to load. it would also avoid the annoying browser. Browser engines such as Trident, Gecko and WebKit aren't built for games, so even if you have a single, duo, triple or quad cores, your CPU usage will fly through the roof.
Ben/Linear did a fantastic job with Capture The Flag and I would love to see some social sharing within' the client with in-game uploads for screenshots and replays.