I will personally never purchase software with a clause that requires approval from the author before publishing benchmarks or reviews. I could theoretically get sued just for posting that my install of SQL Server 2005 is running a standard benchmark script very slowly.
In SQLXML 4.0 I can't even do workarounds if I find out that the software has some technical limitations. That's just sad, and will also prevent me from buying it.
You are used to free software licenses that don't restrict your use, so I understand your statement. But it gets scary when you start using proprietary enterprise apps.
I've been running SLED 10--so far, I haven't had to use any of the enterprise-level items that set it apart from openSuse.
But yeah, I'm a home user when it comes to Linux. I don't have to maintain servers, workstations, or run heavy-duty corporate items...yet 8^)