Use Alexa redirection whenever you can. No matter when or where you provide a link to your website be sure to use the equivalent Alexa redirect URL.
alexa can be fake - dont trust it anymore . though you can improve your ranking by .. increasing your trafic - you can do that by . buying traffic from certain resources. and/or simply go to public website and spamm your website links all over the place and people will go and look and check your website . if your website is interesting people will stay and there your alexa ranking grows.
You can Improve it by simply getting mote traffic to your website. Make sure you out their widget on your website!