I can not understand why JSON.NET so popular (http://www.servicestack.net/mythz_blog/?p=344)
Or maybe I am wrong and picture have changed ?
@sergey_tihon Lastest results for json.net using the most recent versions off NuGet twitter.com/JamesNK/status…
— James Newton-King ♔ (@JamesNK) May 12, 2013
Need to test it!
Sergey Tihon's Blog 
New Release of Json.Net 5.0 arrived with many better features like documentation, improvements in performance and memory. It is very simple,easy,High-Performance Serialization and support for BigInteger.
Latest JSON serializer benchmark results – http://theburningmonk.com/2013/09/binary-and-json-serializer-benchmarks-updated/