[MSL]

  It's not Alex, it's Alexa.

[bentcale]

Get traffic from blogger and technology related sites.It plays the vital role that effects your Alexa Rank.If you get more visitors who are bloggers and techy guys then your alexa rank will increase fast because all the Bloggers and Techy people will be installing alexa widget on their browsers.

[mathewj]

join in a discussion.
answering sites
write a article and do article submission

[Scott UF]

it is so simple in seo, make traffic @ your website, Alexa will increase from user

[fugenxsaudi]

The Alexa page rank counts traffic density on your website, So we should increase traffic on our website through some link building activities like forum, blog, image sharing ets and social media is the best way to increase the traffic of a website.

[MSL]

ets

must be 'etc.' (more about it: https://en.wikipedia.org/wiki/Et_cetera)