The importance of quality of traffic
It is very important that the quality of traffic is more important than the quantity of traffic. The visitor should come to our website by relevant keyword only will lead to an action. We always need to monitor the traffic to our website. We need to analysis for which keyword they come to our site and is it the same keyword we are targeting etc.
If the visitor comes for an irrelevant keyword we will not get any use from that traffic except one additional hit count. So it remains the importance of on page optimization. We need to optimize our website with relevant keywords that fits for our website. Uses of irrelevant keywords may bring us some false traffic but they will not last for a long time. So the natural growth of keyword position is always better than selecting high traffic irrelevant keyword for your website.