According to a recent poll, cross-platform development is not a top priority. At least that is the conclusion from Den Delimarsky, blogger at dzone.com. Nevertheless, more than 50% finds it important and considering this poll was taken at a website with a mostly .NET user base, this could be even higher. Until recently the .NET Framework was not cross-platform, and even now it’s only possible by a derived framework. So you can imagine the result of this survey aren’t completely reliable, but even so, you can conclude there is interest in Cross-platform development.