I must admit that personally I am not too keen on bringing over the old content. While there may be several gems hidden, there is also a lot of outdated information there and I am not convinced that users would limit their search to forums.meteor.com when there is Google
I would think that Google search will turn up results from both places so I’d do quite alright without bringing over the communities history into Discourse.
I am also in favor of not migrating the google groups discussions but rather go for a clean start. Would help a bit to keep out lots of pre-1.0 technical information, which is just not relevant any more.
I agree with this from a cultural standpoint. You should jettison old, outdated content that is only going to confuse people. For what it’s worth I regularly delete old topics on meta.discourse that no longer reflect where we are with the code at all.
I also agree with it from a technical standpoint, it turns out Google Groups is really really hard to export in any sane way: