SEO is not synonymous to JUNK E-MAIL.
Make your links from blog comments genuine.
Everybody thinks their website is above average.
Think about what a user is going to type.
Thirty days is just about the right amount of time to add a new habit or subtract a habit - like watching the news - from your life.
When you've got 5 minutes to fill, Twitter is a great way to fill 35 minutes.