Recently I was developing Wordpress based news portal. There I faced the problem of Wordpress speed and stability on websites having tons of pages and visitors. Thus I needed to investigate this problem. Finally I found 3 ways to speed up Wordpress based website.
Not Bad! You could have said it on rather 1 point that 3 - Use Cache plugins and that would do half the speed up job. Another way is to test your website speed on web based tools and avoid too much of JS and JQs cheers Josh
Also just to note that the article did not mention excessive plugins as a cause for slow downs as well. The least amount of plugins you can have, the better
Use cache plugins and try to clear unwanted plugins from your site. Also choose a good web hosting company.