EspañolSEO Resources: Guides, Research and Tools
Our resources come from client work. The people who run SparkSEO campaigns write the guides, the glossary explains each term in plain English and our research uses our own data.
Why Generic SEO Advice Stops Working
Most SEO advice online repeats the same ten tips. Google now calls this commodity content: text built from common knowledge that adds little for the reader. Its guidance for AI search asks for the opposite, content with a unique point of view and first-hand experience.
AI answers widen the gap. In Pew Research Center's study, Wikipedia, YouTube and Reddit made up 15% of all sources cited in Google's AI summaries. Generic advice competes with those sites and rarely wins, while specific advice from practitioners has a better chance of being cited.
Sources cited in Google's AI summaries
Commodity content
- ✕Built from common knowledge
- ✕Repeats the same ten tips
- ✕Competes with Wikipedia, YouTube and Reddit
- ✕Adds little for the reader
SparkSEO resources
- ✓Written by the people who run our campaigns
- ✓Examples from real client work
- ✓Plain-English definitions for every term
- ✓Research based on our own data
Featured Guide: Local SEO for Lawyers
Local SEO for Lawyers: A Complete Guide
Legal clients compare several firms before they call one. This guide covers practice-area pages, the map pack, reviews and the advertising rules that shape legal SEO.
Latest SEO Guides
Local SEO for the Cannabis Industry
How dispensaries build local visibility when paid advertising is restricted.
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SEO for Dentists: A Complete Guide
Treatment pages, reviews and local rankings for dental practices.
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Real Estate SEO: A Guide To Hyper-Local SEO
Neighborhood pages and local signals for agents and agencies.
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Local SEO for Healthcare Services: A Complete Guide
Local visibility for clinics and healthcare providers.
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SEO Services For HVAC Engineers: A Complete Guide
Seasonal demand, emergency searches and service areas for HVAC companies.
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Local SEO for Contractors: A Guide To Ranking Your Business
Project pages, service areas and reviews for contractors.
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Local SEO for Plumbers: A Complete Guide To Ranking Your Business
Urgent local searches, the map pack and reviews for plumbing businesses.
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13 Tips for Choosing the Best Anchor Text
How to choose the clickable words of a link so they read naturally and describe the target page.
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How to Optimize Location Pages for “Near Me” Searches
How to build location pages that match “near me” searches without duplicate content.
Read guideBrowse by Topic
Local SEO
The map pack, Google Business Profile, reviews and location pages.
Technical SEO
Crawling, indexing, speed and structured data.
AI Search
How AI Overviews, AI Mode and chat assistants choose their sources.
Link Building
Contextual authority, outreach and anchor text.
Industry Guides
Complete SEO guides for eight sectors.
SEO Glossary
SEO has its own vocabulary, and agencies sometimes use it to sound expert instead of to explain. When a report says “we improved CLS on the PLP templates”, the client nods and learns nothing about the business result.
Our glossary defines each term in plain English, with an example and a link to the guide where we use it. Every SparkSEO client report links to it, so you never need to decode your own report.
The authority a link passes when the linking site already ranks for topics close to yours. One relevant link can outweigh many unrelated ones.
One approved set of related keywords for one landing page, measured as one unit.
A search that does not include your company name. It shows how well you reach people who do not know you yet.
An HTML attribute that tells search engines which language or regional version of a page to show. See Wikipedia: Hreflang.
Work that increases how often AI systems cite or mention your content in their answers. See Wikipedia: Generative engine optimization. Google treats this work as part of SEO.
Each entry has an example and a link to the guide where we use it.
SparkSEO Research
Industry studies often measure huge global datasets. The averages tell a clinic or a law firm in one city very little about its own market, and the question that matters to them stays open: which sources do AI answers cite for my services, in my city?
Academic work shows that this question deserves attention. A study presented at the KDD 2024 conference found that content changes can increase a source's visibility in generative engine responses by up to 40%, and that the effect varies by domain. That variation is the reason we research by sector and by market.
Content changes can increase a source's visibility in generative engine responses by up to 40%, and the effect varies by domain.Source: GEO study, KDD 2024
How We Review AI Overview Sources for Local Service Queries
This research method compares AI Overview citations across local service queries, recording the query wording, market, source type and recurring patterns. It shows how to turn the findings into page, evidence and citation checks without promising a specific outcome.
Google Algorithm Updates
Every confirmed update, with what we saw
Google confirms several ranking updates each year. Our timeline lists each confirmed update with its date, what Google said about it and what we saw across our clients' keyword groups. For the long history, Wikipedia keeps a timeline of Google Search.
Free SEO Reference Checks
Performance-based pricing checklist
Use this checklist to compare a base fee, a performance component and agreed non-branded keyword groups before setting expectations.
Hreflang implementation checklist
Use this checklist to confirm language and regional URLs, return tags and page-level targeting before publishing a multilingual page.
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- Weekly and monthly reports measured per landing page on non-branded keywords.