Market of the Internet

There are so many tips about this topic, but from my experience things that work to increase alexa rank are:
- Put alexa widget on your blog.
- Join Entrecard.com
- Write topics that related with webmaster and internet, such as: SEO, online money, blogging, etc.
- Write your blog in english.
- Put you link to webmaster forum.

I guarantee that those tips will boost your alexa rank.
Cheers.