How many times per day do you check email? An infograph from Constant Contact estimates that 72% of people check email six or more times daily. By the end of this year, there will have been more than 200 billion "permission-based emails" sent in the U.S. The infograph provides insight into these stats and more -- including the estimate that each email address gets 3 permission-based email messages per day, up from 2 in 2009. 

Here's a list of AdWords tips marketers might have forgotten, but should certainly know. The list should help recall best practices, as well as remind marketers about the many nuances required to keep a campaign up and running smoothly. Faseeh Shams outlines everything from quality score to calculating click-through rates, monitoring conversion rates, and running search query report counts.  

With $2.4 million in funding, San Diego startup KidZui, which launched the kid's site Zui.com in August, will begin producing original content programming, according to Wendy Getzler, who calls the destination a "search engine." Zui offers site search to explore games, YouTube videos and other content geared for kids. 

Rand Fishkin details how to optimize on-page content, presenting five advanced tactics that take marketers beyond the basics of traditional page optimization. His intention is to get marketers thinking about phrases on a page and how they relate to one another, and the best ways to develop content that makes site visitors want to come back repeatedly because they can quickly find needed content. Fishkin shows marketers how thinking about more than title tag optimization helps produce "intelligent content" that, in turn, produces better search query ranking.

Lisa Raehsler takes a stab at putting together a list of paid-search New Year's resolutions that she believes other marketers should consider. Most of the tips are common sense, but marketers should especially pay attention to No. 5. Similar to a stock portfolio, marketers should diversify and not keep all their brand's eggs in one basket. She writes: "Addicted to AdWords? YouTube, Yahoo/Bing, LinkedIn, and Facebook have all made improvements this past year."

Brent Csutoras defines social seeding and tells us why search marketers should use this tactic in campaigns. He gives us good reasons, which include driving traffic, rounding off backlink portfolios, helping to build social profiles and conversions. Csutoras provides details on each of these -- for example, he writes that a natural backlink portfolio is important, and nothing helps more when it comes to mixing up the inbound link referrers and anchor text. He also offers an outlet to gain real feedback. 

Doc Sheldon serves up some advice on Web site content by delving into the differences between copywriting and strategies. He compares the two to link building and search engine optimization. Sheldon writes: "Link-building is a subset of SEO; so too, is copywriting a subset of content strategy." Before generating copy, he tells us to determine the audience, figure out the goal, and map out the path and the style of the content. Pick a starting point and destination. The journey will support the goal.  

Spreading false statements isn't Google's focus. The engine simply indexes aritlce written about a specific topic from millions of Web sites. Nonetheless, Max Mosley is suing Google for unflattering -- and what he calls false -- search results. The lawsuits in France, Germany and possibly in California aim to prevent the further spread of a Nazi sex party story. News reports exposed the orgy two years ago, but the Nazi connections were later proven false. Mosley wants Google to block and remove all defamatory online references.

Combining social data with search functions in a portable app, Topsy Labs released a social real-time mobile search engine that allows users to find data about topics on Google+ and Twitter. The search engine offers a "Social Time Machine" feature that enables users to look up results on a timeline, according to Robin Wauters. Users also can save search queries to revisit at a later time.

Barry Adams serves up a list of 10 blogs that he believes search engine optimization experts should read, although none are focused on SEO. The posts range from digital strategies to paid search to social media. Yes -- all related topics that Adams believes will lead to an improvement in serving up search queries on engines.