They do? I'd would actually love to read them (I'm sure so would others) so perhaps you would provide some links?
On this note though, I should probably mention I didn't reference those posts to prove there is a deluge of people leaving .NET (in fact I highly doubt that there is), but for context and to demonstrate just how cliche and unoriginal mine was. ;-).
Well some people have the opposite experience and also have written posts as to why they are moving to .NET.