I have tried a lot of techniques to rank many keywords, all the techniques such as directory submission, ..... which one you will recommend after recent google update
After recent update you need to focus on guest posting and web 2.0 submissions. But remember content must be unique.
content is King
directory submission sites are penalised
link sharing sites are penalised
link spamming is penalised
Your original content,
links from content-related valid non-spam sites
I recommended you to use forum posting, bookmarking, blog commenting, article posting and press release.
submit creative and authentic content on website.guest blogging and forum posting is best thing for ranking better.
Article postings, forum postings, blog commentings, social bookmarking are imortant but we have to try to submit our link only good pr and most of traffic websites.
I am also facing the same problem with my keywords...
My keywords are also lost their ranking...
Please give some appropriate solution for this...
Share content, publish articles and press releases, use SMO activities.. get linkbacks from quality based websites.
Do natural link building.. avoid black hat seo..