In a quality product, the incremental comfort value of increasing thread count over 300 is very little. A 300 thread count can feel far superior to a 1000 thread count. Thread count has become a simple metric used by marketing people to capture interest and impress with high numbers.
The Truth About Thread Count, via Kottke. I saw the expensive 1,000-thread-count sheets at Target recently and remembered reading something once about the deceptive marketing of thread count in linens. I wonder why fabric companies haven’t adopted the practice, though I’m glad they haven’t!