Eventually, every mono-app out there, every bit of it has to be thrown in the bin, paid for by licensing or coded again.
If useful apps like Banshee and F-Spot would have used TRUE free-as-in-freedom languages and platforms to begin with, they would have been useful examples for others to follow.
Instead their developers are only wasting time and efforts to nurture MS’es wet-dream of trying to pwn the GNU/Linux desktop…

“Those who don’t learn from the past are damned to repeat it.”