Listed rank 1-5 of what you feel is most important. For me it's 1) Article Submission 2) Social Bookmarking 3) Forum Posting 4) Blog Commenting 5) Pinging
I'm not going to list the normal methods. I'll list some more specific methods that I use: 1. Article Directory Linkwheels 2. Manual Blog Commenting On Other Platforms Than The Normal WP Comment System 3. Getting Thousands Of Internal Links To Forum Profiles In vBulletin Forums (automated, not posting or creating thousands of profiles) 4. Building 2nd, 3rd, and 4th Tier Links 5. Creating 'Indexing' Blogs Specifically Made To Index Links Placed In UNIQUE Posts (automated) These are different than what most people stick to but they work great. 1 works great with good content and good directories. 2 works great on certain platforms that I won't reveal to everybody, 3 works great to make forum profiles into instant authority links and takes an hour tops, 4 works great (not really unique), and 5 is my secret method. It is easy to build links but indexing every link can be hard. My method works fantastic because all blogs are filled with unique content. I've found over 50,000 unique articles to post to these blogs so I don't recommend this unless you have a great source of unique content for free.
Yes these are the important SEO strategies but apart from these there are some other techniques you may use like Link Wheel, Directory Submission, RSS Submission etc. Thanks !!!
Article submission Blog commenting Social networking and bookmarking Forum posting and Guest blogging.