It would take a while since you're targeting broad keywords which are very very competitive. Experiment on optimizing your site for long tail keywords.

Digg is vote driven by the readers. If your story appeals to the readers then it will get more votes and more exposure - more traffic.

anyways, it doesn't hurt to place the doctype declaration on web pages.

The best thing you can do is isolate the problem one by one. Possible problems could be: -corrupted files on os -failing hard drive -motherboard problems: bios, add on cards, ram etc. -The first thing you have to do is to check your computers memory(ram). You can do this by disabling the 'quick boot...

Assuming you have done on page optimization - meta tags, description, titles, keywords in your content, etc...the next thing to do is build links to your site - writing articles, social bookmarking, joining social communities - put your link where ever you can.