I agree with most of it, and it's a good review, but
"Both Ovi applications are written in .NET, which ensures they're enormously buggy, take far more system resources than they should, and are not portable to Mac or Linux."
Last bit's right, coding them in .NET is no excuse for buggy code and I'm clearly missing a correlation. Also, take far more system resources than they should? Shouldn't really, and if they do, once again, it's down to bad coding.
Other than that it's a good review, and pretty much what I expected.