Rand Fishkin compares scaling up a company's employee count to increasing the scope of a search ad campaign, and  reflects on the similarities. He takes us through productivity and features, and culture and people to highlight a company's growth. Fishkin also discusses the challenges of failure, which are inevitable. Deal with it, fix it, and move on.

Miranda Miller tells us that Twitter has updated its robots.txt file to allow search engines to crawl more of the site, meaning that Google, Bing, Yandex and others will have access to Twitter’s search results pages displaying Promoted Tweets. The ads will serve up in search engine results, begging an answer to the question once again: What influence will social have on search engine results? Miller provides some food for thought. (You can attend the social and search OMMA Social Data LA panel for more.)  

eMarketer points to a search marketing study from SEOmoz estimating that only 54.9% of online marketers worldwide said Google+ was one of their top five most-used sites for social media marketing, compared with 87.7% who cited Facebook and 82.7% who cited Twitter. Who is using Google+, considering that Google estimates 100 million active monthly users out of about 400 million people worldwide who have signed up for the Google+ service? While eMarketer doesn't provide all the answers, the data yields some insights.

Network World reports the ICM Registry, the company behind the pornographic .xxx sponsored top-level domain (sTLD), launched a search engine to drive more traffic to .xxx Web sites and give users some anonymity from auto-complete features in google.com. Grant Gross tells us that Stuart Lawley, ICM's CEO, believes the new search engine will give "pornography fans" a more "satisfying search experience" and "streamlined searching process," helping to "protect" them from viruses and malware.

Reuters reports that Brazilian police detained and released a Google executive Wednesday after the company failed to take down a YouTube video attacking a mayoral candidate. The report called it an "alleged violation of electoral law," citing federal police who said the crime of disobeying a judge's ruling under the Electoral Code can carry a sentence of up to one year in prison.

Sean Work defines on-page search engine optimization and tells us why it's important and how it works. He suggests beginning with a site audit and suggests ways to organize Web pages by subject and categories; optimize title tags, headers and meta descriptions; and check for duplicate content. He also takes us through the process of redirecting old content and keeping the original URL structure in place.

Google said it changed its sitelinks policy to "proactively" enforce that each link in organinc listings send site visitors to another landing page in the brand's Web site. As ads get served, Google's systems will verify that the sitelinks meet the policy standards. Sitelinks that don't meet the standards will be restricted from appearing. Mark Martel also tells us how to get started and details some of the features marketing can expect in the future.

Remarketing or retargeting provides marketers with an opportunity to reconnect with consumers who visited their brand's or company's Web site. Marc Weisinger tells us that Google made it easier to set up and start using their tool and features. He walks through the setup and explains segmentation tactics that were not previously possible.

One-third of men have searched then purchased digital content via their mobile devices, and nearly as many have purchased consumer electronics, according to eMarketer, citing a study from market research firm uSamp. The study also found that 23% have used the device to buy movie and event tickets.

With presidential elections around the corner, California Governor Jerry Brown will sign a robot car bill on Tuesday at Google's Mountain View, Calif. headquarters. Chris O'Brien tells us a live stream video will be made available at 1 for those who can't make the event. He also links to the legislation related to the signing.