After the Google Panda and Penguin updation my keywords are down. Please let me know how can I recover my keywords and website from Google plenty.
Write quality content and post it to high page rank article website. Build links from different anchor text, don't build too much links from same anchor text.
Analyze your website and find out the weak areas where the content and links are of low quality according to Google guidelines.Then focus on quality and relevant content and links avoiding keyword spamming and link spamming.