Since Google launched their Penguin update on April 24th, millions of websites have been falling down the rankings like losing soldiers in the battlefield! Google has been cracking down on "spammy" websites like never before.

This update has indeed been very effective at knocking down spam sites, but many believe that some legit sites have also wrongfully been hit and have voiced their opinions on Google's forums and social media outlets. Google's Search Quality team listened and has set up a form that webmasters can use to notify Google that the Penguin has been unfair to them.

If you have used any unnatural SEO techniques in the past and your website is still proudly standing on the first page, it doesn't mean you're safe. In fact, Google said that the updates will be gradually deployed throughout the next few weeks. Expect a lot of movement in the SERPs!

If you are feeling bad while reading this because you do remember using some slightly shady link building techniques in the past, don't worry, it's never too late to repent.

Now is the time to "whiten your hat" and re-think your SEO strategy. Here are some valuable link building tips that will help you not only survive the Penguin update, but safely improve your rankings for the long term...

Tip #1 - Get More Social, Leverage Your Fanbase

In 2012, social signals are more important than ever. When you post fresh content on your site or blog, make sure you share it on ALL your social pages. In fact, this should be almost like a reflex. For the lazies out there, there are tons of plugins and tools that can help you automate this process. Twitterfeed is one of them.

I have seen too many companies posting new blog posts weekly, but not sharing them on their Google+, Facebook fan page, or on Twitter. What's the point of having all these fans, friends and followers if you're NOT showing them your content? When you share useful content, you will get likes, retweets, and +1's. This not only gives you bonus points in terms of SEO, but it also helps virally spread your content far beyond the confines of your fanbase. A win-win!

Tip #2 - Link Your Inner-Pages

When link building, a lot of SEO's are still making the rookie mistake of always linking to their homepage. I understand that your homepage is the most important page of your site, but you can be guaranteed that Google will raise a red flag if a large majority of your backlinks point to your homepage and very few of them are linking to your blog posts and inner pages. It simply doesn't make logical sense for Googlebot. After all, inner pages are where the real content is at! When you look at a website that acquires tons of links naturally like SEOMOZ, you'll notice that most of the natural links they get are to their inner content pages (blog posts, videos, SEO guides, etc...)

Also, remember that it's not just about external links. Internal links are also highly important. Take some time to improve your internal site's structure by making sure the right keywords are linking to the right pages internally. This will make it easy and intuitive for both Google and your visitors to crawl your site. If you're lazy and you happen to be using WordPress, consider using a plugin like SEO Smart Links that can automate the whole process.

Tip #3 - Diversify Your Anchor Texts

Another element that Google has been cracking down on this year is over-optimization (both on-site and off-site). There's nothing Google hates more than feeling like you're trying to force it to rank you for a specific keyword. For instance, if you are targeting the keyword "New York Condos For Sale" and you're asking all your link partners to link to you using that exact keyword, Google will think it's highly suspicious.

It simply doesn't make sense for Google that all these websites would naturally want to link to you using that exact keyphrase, which also happens to be in your website's title bar and all over your homepage. *ahem ahem*

Think about it, if people were to link to you naturally, wouldn't they all be using different keywords? You bet they would, so try to vary your anchor links in a natural way. This will show Google that you're not trying to force it to rank you for any specific keywords, rather you're just trying to point visitors in the right direction. :)

Remember that Google is now smart enough to figure out which keyword relates best to your content. I also highly recommend using editorial keywords as anchor texts, such as: "click here," "read more," "learn more," etc... as these look way more natural. Again, diversity is key here.

Tip #4 - Focus on Quality, not Quantity

This has been said over and over, but it is more important this year than ever before. The game has drastically changed, folks! Google will penalize your website if you have a large amount of backlinks from untrustworthy sites. (Authority Link Network anyone?)

If you are doing guest posting, I can guarantee you that one high quality blog post from a reputable site is better than 100 posts from low quality ones. I have seen clients in competitive niches enter the first page with less than 30 quality links, while most of their competitors had hundreds/thousands of them.

Also, do yourself a favor and forget about shady link building techniques like mass directory submissions or any automated type of link. If you know someone that has reached the first page using these "spammy" techniques, you should feel bad for them. Google will eventually hit them and hit them hard. If not today, maybe tomorrow, or next month. These guys are definitely on Penguin's hit list. You don't want to be in their shoes. Going to bed every night wondering if your website will still be in the SERPs tomorrow is not a good feeling.

Tip #5 - Make Your Content Link-Worthy

Last but not least, make sure you are producing link-worthy content. Outsourcing your article writing for $5 a piece won't get you very far. If your visitors don't like your content, they will leave your site. High bounce rates = bad user experience. Bad user experience = lower Google rankings. It's really that simple. If you provide content that has value, people will stay longer on your site and possibly hit the like or tweet buttons on one of your articles. This enhanced user experience will pay off SEO-wise.

Always remember that content is (and will always be) king. That is the rule of thumb in white hat SEO. Do you think websites like SEOMOZ or Search Engine Journal need to do any link building in order to rank high in search engines? Probably not, they simply focus on delivering high quality content that people constantly link to from their websites and their social profiles.

This is the safest, most natural, and most efficient form of SEO.