Long-tail keywords — the specific, multi-word phrases people actually type when they know exactly what they’re looking for — collectively account for the majority of search traffic, even though any single long-tail phrase looks unimpressive on its own in a volume column. The trouble is finding them: they’re too numerous and too specific for a competitor gap analysis to fully surface, since gap analysis can only show what someone else has already targeted. The A-Z Suggest method exists specifically to fill that blind spot.
Why Long-Tail Discovery Needs a Different Tool
Competitor-based gap analysis is powerful, but it’s structurally limited to what your tracked competitors have already published. If nobody in your comparison set has covered a specific long-tail angle yet, gap analysis simply can’t tell you it exists — there’s no signal to detect. Long-tail phrases, by their nature, are exactly the kind of content that’s easy for competitors to have missed, precisely because there are so many possible variations that even an active publisher can’t cover them all. That’s what makes them valuable: genuinely untapped territory rather than a race against sites that got there first.
How the A-Z Method Surfaces Them
The mechanism is straightforward: take a seed keyword and append every letter of the alphabet to it in turn — seed + “a” through seed + “z” — querying Google’s own autocomplete suggestions for each combination. Because autocomplete reflects genuine, aggregated search behavior rather than a modeled estimate, what comes back is real long-tail phrasing that people are actually typing, not a guess at what they might type. Running the full alphabet against one seed typically surfaces dramatically more variations than the handful of suggestions Google would offer for the bare seed term alone.
Filtering for Genuine Long-Tail Value
Not every raw suggestion that comes back is a genuine long-tail opportunity — some of it, particularly from seed+letter combinations Google doesn’t have a strong completion for, drifts into unrelated territory entirely (a known failure mode covered in more depth in a companion article on filtering). The reliable fix is keeping only suggestions where every word from your original seed appears somewhere in the result — a simple rule that filters out the bulk of the irrelevant noise while preserving the genuine long-tail expansions.
What Makes a Long-Tail Keyword Worth Writing
Once you have a filtered list, not every survivor is equally worth pursuing. The strongest long-tail candidates tend to share a few traits: they express a specific, identifiable intent (a question, a comparison, a particular use case) rather than a vague variation on the seed; they connect clearly to something your business actually addresses; and — checked separately through a top-10 and volume comparison — they show at least modest real search demand rather than being so narrow that essentially nobody searches for the exact phrase.
Cross-Checking Against What Competitors Already Cover
Once you’ve filtered a Suggest expansion down to a promising shortlist, it’s worth a quick cross-check against your existing competitor gap report. If a long-tail phrase your Suggest expansion surfaced also happens to show up as something a tracked competitor already covers, that’s not a wasted find — it’s actually a stronger signal, since it means the phrase has enough genuine value that someone else independently decided to target it too. If it doesn’t show up anywhere in your gap report at all, that’s a signal you may have found something genuinely untapped.
A Practical Long-Tail Discovery Workflow
- Pick a seed keyword specific enough to anchor relevant suggestions, but not so narrow that little comes back.
- Run the full A-Z expansion rather than stopping partway through the alphabet.
- Filter for suggestions that retain every word of your original seed.
- Group survivors by apparent intent — question, comparison, use-case, definitional — to spot natural content angles.
- Cross-check the strongest candidates against your gap report and a volume/competition check before writing.
Long-tail keywords rarely show up in a headline strategy discussion, but collectively they’re where a huge share of achievable, low-competition search traffic actually lives. The A-Z Suggest method is the most direct way to surface that layer systematically, rather than stumbling onto individual long-tail phrases by accident.
