Named threads are very useful if you want to use the thread filter to display data.
Filtering threads with real names make it much easier to watch events than using a thread id, especially as thread ids are quite likely be different between sessions.
Tells Memory Validator to name a specific thread.
void mvSetThreadName(DWORD threadID, // id identifying a thread (CreateThread, CreateProcess, beginthread(), beginthreadex(), GetCurrentThreadId()...)
const TCHAR* name);