Good question, for most directories I use they ask for mobile number to send a message of verification, for the ones which phone you for verification inform the company before hand to tell their customer service people to be ready. I know the bigger the company the more tricky these things get you just have to find out what works best to answer the calls even if they give you a direct number to use. 
Novelty wears off. Even if people aren’t getting sick of your ads, your product itself will become less revolutionary over time. When Casper launched, a direct-to-customer mattress-in-a-box company was a hot new take on the traditional sleep industry. Now there are so many competitors that the idea of a mattress showing up at your door in a box just isn’t as exciting.
Hi Chris, "Good content" means a couple of things - good for readers and good for Google. Good content for readers means that the content answers questions, provides value, offers solutions, and is engaging. You want to keep the reader on the page and on your website for as long as possible. To make good content for Google, you have to provide the search engine with a set of signals - e.g., keywords, backlinks, low bounce rates, etc... The idea is that if you make good content for readers (engaging, valuable, actionable, and informative), your content will get more engagement. When your content gets more engagement Google will see it as good content too and put it higher in the SERPs. Making "good content" is about striking that balance. Let us know if that answered your question!
Student teams that demonstrate strong Google Ads knowledge, develop a thorough online marketing strategy, execute optimized Google Ads campaigns and provide a post-campaign analysis with future recommendations for their nonprofit partner will receive a personalized certificate from Google recognizing their academic achievement and social impact. Top performing teams also have the opportunity to submit their story to be featured in Google’s Social Impact Spotlight Series, as well as Hangout on Air with Googlers near and far.

In 1998, two graduate students at Stanford University, Larry Page and Sergey Brin, developed "Backrub", a search engine that relied on a mathematical algorithm to rate the prominence of web pages. The number calculated by the algorithm, PageRank, is a function of the quantity and strength of inbound links.[21] PageRank estimates the likelihood that a given page will be reached by a web user who randomly surfs the web, and follows links from one page to another. In effect, this means that some links are stronger than others, as a higher PageRank page is more likely to be reached by the random web surfer.
Remember when you used to rely solely on search engines for traffic? Remember when you worked on SEO and lived and died by your placement in Google? Were you #1? Assured success. Well, okay, maybe not assured. Success only came if the keywords were relevant to your site users, but it was the only real roadmap to generating site traffic and revenue.