You should follow only if the person has a blog that interests you.
If you follow several hundreds accounts, you will probably not check all their posts, so what good is it to follow so many people?
I have decided from the start that I will not follow more than 50 accounts.
And I already unfollowed several that were posting too often for my taste.
Thats so true..i was following too many accounts at the beginning and missing on a really good content.
Im here only few weeks and absolutely love it.
Another lesson learned!