This article is better than I thought it would be. It's written by Neil Davidson, co-CEO of Red Gate software. I used their C# profiling tool a few years back,

This article is better than I thought it would be. It's written by Neil Davidson, co-CEO of Red Gate software. I used their C# profiling tool a few years back, so my ears perked up a bit when I saw the author's affiliation. The takeaway seems to be that if you've written your product on a platform (in their case VB6) that you can't take forward for whatever reason, then it might make sense to rewrite it. Davidson freely admits that they rewrote their code for the wrong reasons -- they just couldn't think of anything else to do at the time -- but that it turned out well in the end for them. Ironically, they were right about competitors nipping at their heels. I now use the profiler built into Vistal Studio .NET 2008 instead of the Red Gate profiler.