Hope that this will help you to improve your alexa rank. I got this on internet and it was based on Aaron Wall's article. 20 Quick Ways to Improve your Alexa Ranks.

1. Install the Alexa toolbar or Firefox’s SearchStatus extension and set your blog as your homepage.
2. Put up an Alexa rank widget
3. Encourage others to use the Alexa toolbar.
4. Work in an Office or own a company? Get the Alexa toolbar or SS Firefox extension installed on all computers and set your website as the homepage for all browsers.
5. Get friends to review and rate your Alexa website profile.
6. Write or Blog about Alexa.
7. Flaunt your URL in webmaster forums.
8. Write content that is related to webmasters.
9. Use Alexa redirects on your website URL. Try this: http://redirect.alexa.com/redirect?www.doshdosh.com .
10. Post in Asian social networking websites or forums.
11. Create a webmaster tools section on your website.
12. Get Dugg or Stumbled. This usually brings massive numbers of visitors to your website and the sheer amount will have a positive impact on your Alexa Rank.
13. Use PayperClick Campaigns.
14. Create an Alexa category on your blog and use it to include any articles or news about Alexa.
15. Optimize your popular posts.
16. Buy banners and links for traffic from webmaster forums and websites.
17. Hire forum posters to pimp your website.
18. Pay Cybercafe owners to install the Alexa toolbar and set your website as the homepage for all their computers.
19. Use MySpace .
20. Try Alexa auto-surfs.

Boss would kill you of if you switched the homepage to your site on all computers. haha!

Why in Asian Social network sites / forums ? Any reason behind this?

Yeah, you are right, boss will shoot if we do that. But we can do that if we own the business or the company.
And I don't know the reasons behind it, because I copied it from somewhere which I already mentioned. Hope somebody else answers it.

What does that mean?