I think you misunderstand something about the concept of GMT. GMT (just as UTC) is independant of DST. In winter, Greenwich is in GMT, in summer, it's in GMT+1. GMT is just a name, nothing more. It doesn't indicate the time for a certain town, nor does it suggest Great Britain as the center of the world.

Quote Originally Posted by Ihnako View Post
Right now Greenwich Mean Time is UTC+1
That quote is incorrect. GMT is never UTC+1. Again, GMT is not the time in Greenwich, it's the time in Greenwich in winter. In summer, Greenwich runs in GMT+1, and in UTC+1.

GMT and UTC are the same with the exception of leap seconds to account for physical anomalies regarding the earth's rotation. UTC is based on physical conditions rather than arbitrary conventions, as GMT is. However, the convention wasn't entirely arbitrary, in that it tried to simulate (although by arbitrary intervals) the earth's rotation. When the second was defined in terms of natural phenomena, it was tried to approach 1/86400 th of the duration of earth's rotation around its own axis, they weren't quite as accurate as they've hoped. Also, they didn't take into account back then, that the earth's rotation is changing, due to several factors. So eventually (a few millenia down the road), our daytime would have shifted by an hour or so. UTC is trying to correct that.

Right now, however, the difference is negligible. The difference between UTC and GMT is less than a second as of now. DST does not at all depend on either of them, as it can be (and is) applied to both of them. So, again, while UTC is arguably the more correct way to do it, it is not, by any means, official, and it is not, by any means, necessary on non-time-critical applications, such as message boards. If you feel it's worth complaining, good luck with that.