Re: I think this is a positive move for Mono
"" "At that point .NET really is cross platform. Personally I think its a really exciting prospect, and I think they are serious about Open Source now."""
No, it is not serious, at least not until they release code under the BSD or GPL licenses.
And I will add that it will be considered serious when they opensource anything that is really useful outside the MS world and its beneficial for many others, not just MS.