Grapevine has had the honour of being the sole working MSN client for RISC OS for perhaps two years. In that time, despite being a commercial application, it has received no support for the more 'modern' features of MSN. I'm not talking about Audio or Video chat support, which I think is particularly tricky to implement from a closed protocol like MSN. Rather, I'm talking about fairly common stuff like display pictures, that have been in (free) MSN clients for years now. Together with an arguably 'unattractive' user interface, Grapevine wasn't really a great MSN client for RISC OS users. The fact that it's a commercial app makes it even less attractive, which is perhaps why R-Comp didn't sell as much copies as they might have hoped for.
So I'm very glad someone has gone ahead and implemented a remarkably decent and modern client for Microsoft's MSN / .NET Messenger protocol. The really terrific part being Christian is giving this gem away for free. Pretty amazing.