In addition to giving you insight into the search volume and competition level of keywords, most keyword research tools will also give you detailed information about the average or current estimated CPC for particular keywords are. This is particularly important for businesses with smaller ad budgets and this feature allows you to predict whether certain keywords will be truly beneficial to your ad campaigns or if they’ll cost too much.
Website saturation and popularity, or how much presence a website has on search engines, can be analyzed through the number of pages of the site that are indexed by search engines (saturation) and how many backlinks the site has (popularity). It requires pages to contain keywords people are looking for and ensure that they rank high enough in search engine rankings. Most search engines include some form of link popularity in their ranking algorithms. The following are major tools measuring various aspects of saturation and link popularity: Link Popularity, Top 10 Google Analysis, and Marketleap's Link Popularity and Search Engine Saturation.

Paid inclusion is a search engine marketing method in itself, but also a tool of search engine optimization, since experts and firms can test out different approaches to improving ranking and see the results often within a couple of days, instead of waiting weeks or months. Knowledge gained this way can be used to optimize other web pages, without paying the search engine company.

Often the line between pay per click advertising and paid inclusion is debatable. Some have lobbied for any paid listings to be labeled as an advertisement, while defenders insist they are not actually ads since the webmasters do not control the content of the listing, its ranking, or even whether it is shown to any users. Another advantage of paid inclusion is that it allows site owners to specify particular schedules for crawling pages. In the general case, one has no control as to when their page will be crawled or added to a search engine index. Paid inclusion proves to be particularly useful for cases where pages are dynamically generated and frequently modified.
Since social media marketing first came to be, strategists and markets have been getting smarter and more careful with the way they go about collecting information and distributing advertisements. With the presence of data collecting companies, there is no longer a need to target specific audiences. This can be seen as a large ethical gray area. For many users, this is a breach of privacy, but there are no laws that prevent these companies from using the information provided on their websites. Companies like Equifax, Inc., TransUnion Corp, and LexisNexis Group thrive on collecting and sharing personal information of social media users.[107] In 2012, Facebook purchased information from 70 million households from a third party company called Datalogix. Facebook later revealed that they purchased the information in order to create a more efficient advertising service.[108]
Although online marketing creates many opportunities for businesses to grow their presence via the internet and build their audiences, there are also inherent challenges with these methods of marketing. First, the marketing can become impersonal, due to the virtual nature of message and content delivery to a desired audience. Marketers must inform their strategy for online marketing with a strong understanding of their customer’s needs and preferences. Techniques like surveys, user testing, and in-person conversations can be used to understand the overall user experience.
Unplanned content is an 'in the moment' idea, "a spontaneous, tactical reaction." (Cramer, 2014, p. 6). The content could be trending and not have the time to take the planned content route. The unplanned content is posted sporadically and is not calendar/date/time arranged (Deshpande, 2014).[88][89] Issues with unplanned content revolve around legal issues and whether the message being sent out represents the business/brand accordingly. If a company sends out a Tweet or Facebook message too hurriedly, the company may unintentionally use insensitive language or messaging that could alienate some consumers. For example, celebrity chef Paula Deen was criticized after she made a social media post commenting about HIV-AIDS and South Africa; her message was deemed to be offensive by many observers. The main difference between planned and unplanned is the time to approve the content. Unplanned content must still be approved by marketing managers, but in a much more rapid manner e.g. 1–2 hours or less. Sectors may miss errors because of being hurried. When using unplanned content Brito (2013) says, "be prepared to be reactive and respond to issues when they arise."[87] Brito (2013) writes about having a, "crisis escalation plan", because, "It will happen". The plan involves breaking down the issue into topics and classifying the issue into groups. Colour coding the potential risk "identify and flag potential risks" also helps to organise an issue. The problem can then be handled by the correct team and dissolved more effectively rather than any person at hand trying to solve the situation.[87]

In the social sphere, things change fast. New networks emerge, while others go through significant demographic shifts. Your business will go through periods of change as well. All of this means that your social media strategy should be a living document that you look at regularly and adjust as needed. Refer to it often to keep you on track, but don’t be afraid to make changes so that it better reflects new goals, tools, or plans.

Digital marketing poses special challenges for its purveyors. Digital channels are proliferating rapidly, and digital marketers have to keep up with how these channels work, how they're used by receivers and how to use these channels to effectively market things. In addition, it's becoming more difficult to capture receivers' attention, because receivers are increasingly inundated with competing ads. Digital marketers also find it challenging to analyze the vast troves of data they capture and then exploit this information in new marketing efforts.