On April 24, 2012 many started to see that Google has started to penalize companies that are buying links for the purpose of passing off the rank. The Google Update was called Penguin. Since then, there have been several different Penguin/Panda updates rolled out by Google. SEM has, however, nothing to do with link buying and focuses on organic SEO and PPC management. As of October 20, 2014 Google has released three official revisions of their Penguin Update.

Cost and Sustainability. While it’s not totally free and easy, SEO can be more cost-effective in the long run as it will give you a targeted and relevant results that you are aiming for your business. With regards to sustainability, even with the smallest of a budget, you can still develop a plan that will still give you the quality of results and still keep the traffic that your business is getting.
But if someone performs a search for Moz, well, guess what? I mean we can nail that sucker. We can definitely rank for that. Google is not going to take away our ability to rank for our own brand name. In fact, Google knows that, in the navigational search sense, they need to provide the website that the person is looking for front and center. So if we can create more demand for Moz than there is for SEO tools, which I think there's something like 5 or 10 times more demand already for Moz than there is tools, according to Google Trends, that's a great way to go. You can do the same thing through your content, through your social media, and through your email marketing. Even through search you can search and create demand for your brand rather than unbranded terms.
If you check out some of the suggestions below this though, you're likely to find some opportunities. You can also plug in a few variations of the question to find some search volume; for example, I could search for "cup of java" instead of "what is the meaning of a cup of java" and I'll get a number of keyword opportunities that I can align to the question.
The HTML tag is meant to be a concise explanation of a web page’s content. Google displays your meta description beneath the page title in their organic results. While meta descriptions aren’t as important as page titles in your Google ranking, they do play a big role in getting clicks from users. People read descriptions as a preview of your page and use it to determine if your content is worth visiting. You should keep your meta descriptions to under 150 characters since Google won’t display text beyond that. You should also include target keywords in your text, since any words matching a user’s search query will be displayed in bold.
Using organic search data through Data Cube you can make your PPC campaign even stronger. You can research keywords that have the highest traffic and use the BrightEdge Recommendations engine to learn the types of sites that people are most likely targeting with specific queries. You can then create content for your PPC campaigns armed with this insight, positioning yourself well for paid search success.
Look at your short- and long-term goals to choose whether to focus on organic or paid search (or both). It takes time to improve your organic search rankings, but you can launch a paid search campaign tomorrow. However, there are other considerations: the amount of traffic you need, your budget, and your marketing objectives. Once you’ve reviewed the pros and cons, you can select the search strategy that’s right for you.
Though a long break is never suggested, there are times that money can be shifted and put towards other resources for a short time. A good example would be an online retailer. In the couple of weeks leading up to the Christmas holidays, you are unlikely to get more organic placement than you already have. Besides, the window of opportunity for shipping gifts to arrive before Christmas is ending, and you are heading into a slow season.