I spent a few months following and unfollowing various accounts and tweeting myself to find out what makes it one of the 10 most visited websites.
The advantage is that unlike on, say, Blogger, you can’t waste hours and hours of your time writing a blog as dull and long as something by Sir Walter Scott.
The disadvantage is that with 140 characters you can express an opinion, but you don’t have enough space for even beginning to justify it.
So I mean to keep an eye on the dozen accounts I’m still following (this number will probably slightly decrease over time) and “share” links to pages I find interesting.
Occasionally, maybe, “silently shout out”.