I've been creeping around looking at a lot of people's accounts (I'm doing a survey) Noticed that people with very few followers have one thing in common: they have not boosted the posts of other people often if at all.
(When I see posts like this encouraging boosting I always think "well that person just wants boosts, whatever") That's not it. On twitter it was important to only boost exceptional content -- boost here to invite more people to join in talking about something.