Well, it's not just me who uses my account, it's for myself and 2 other uni friends.
We primarily use to get stuff early, but we are in the process of 'trying' to develop games using the iOS dev centre and we also are dipping into the Safari dev centre side of things also, creating extensions and such? more often than not, we find that something is on Firefox but not on Safari so when me and my friends get together, we think, would it be worth while dipping into the source code and perhaps trying to make a compatible version for Safari? etc, etc.
On the iOS side of things, it's a lot harder than it first seems, we're all rather adept in programmable languages and what not, but we're not quite sure what type of game we'd like to go for first, although me and the other guys at the moment, with external help from friends who have graduated uni, we're trying to build/make a tower defence game at the moment, nothing too major or exciting, but a similar type game to bloons is it called? but make it better hopefully, time shall tell.