how to protect website from google penguin?
 

Use the following points to protect website from Google penguin

Audit your Links Monthly
Check Anchor Density
Check Link Ratios
Don’t Engage in Spammy Link Building!!!
Build High Quality Links

Google penguin harm your website if you broken any rules and regulation of search engine so do not break rules.

Make website with full of original content with quantity.
get high pr backlinks from trusted websites.
get backlinks from your niches website.
Do right SEO.

You don't have to worry for anything as long you you are doing the right way.

Always try to use fresh content.

If you dont violate on their rules I am sure google will not harm your site. Thats it.

Do Pure relevant work and don't do spamming.Also don't stole content from other sites...

Build a high quality website that others want to link to, and don't engage in spammy link building techniques.

You must follow Google Penguin's rules and don't spam website.. This will help you increase page rank and promote your site.

Don't link to low quality websites, and diversify your links anchor text. build links that get traffic so that way you hit two birds with one stone.