LinkedIn is all about making connections. At first users should focus on connecting with the people they know: co-workers, acquaintances, old classmates, etc. But eventually, you will want to expand your network even further and build stronger relationships.
As your LinkedIn networking efforts increase, so will the amount of time you spend sending connection requests, waiting for their response, and looking for more prospects. This is tedious and exhausting. This is where auto connecting on LinkedIn comes in.