Smile [Q] What is nmstracking ?

In the SD card one gets to see the 'nmstracking' folder. Anybody has any idea about what the folder is? The folder is full of innumerable .log files. What are these? There functionality? I'm kinda confused as deleting them causes no effect to my phones functionality. The .log files keep coming back. Any basic idea anybody?
I opened one of these several files using notepad and it shows random data aligned to the left. The data also consists of my mobile carrier name, manufacturer name, model number, and time zone etc. Can anybody elaborate what these files are?
Thanks