Title changes amplitude
 

Usually, if you weight is not high, it is suggested that don't change the title, what belongs to the weight is not high, for instance, snapshot slow, included less, included slow, low PR. If changed the title, a few days not updating the snapshot, which may be reduced right; If your web site snapshot update daily, and changed the title, the second day will update. Site title and a kind of circumstance may be K, that is in a very short time, often modify title, friends need to pay attention to.