While this may be true it's a moot point when not everyone can use it due to restrictions imposed upon them at their schools or for other reasons. Linux, FreeBSD, OpenBSD and NetBSD are also open but not everyone is using them, for a number of reasonsWhile zip might be widely supported, it is not an open format like 7-zip.
Give me a list of LEGO/NXT extensions you'd like to see and I'll see which ones can be added easilyAnyway, I can live with zip, however I would at least expect NXT related file formats like .nxc, .ric and the like, and some general Lego formats like .ldr (LDraw) to be allowed. Those kind of files are usually less than 10 KB is size too.
That's when zip files come inAnd isn't the max 3 attachments per post a bit low?
- Xander