Actually, Google searches typically constitute the vast majority of views and clicks. A strong following on HubPages might have a minor benefit, but it is very minor indeed when compared to search engine attention.
In any case, the best way to earn valuable followers is to just keep writing high quality content that others will find interesting. Niche writing is the best way to do this, but that's not for everybody. Try to be involved in other ways by commenting on the hubs you read, answer questions, and participate in the forums. These are great ways to get noticed.
It is some people's policy to follow others just for the sake of getting a follow from them in return. This will amount to very little as followers mean almost nothing unless they are genuinely interested in what you are writing, so don't waste your time with this behavior.
In short, just focus on your hubs. Getting noticed by search engines will be dramatically more lucrative than any attention you will get on HubPages (unless you are lucky enough to have a hub featured ;)