Once you run more than one directory, a tempting question appears: how do these properties help each other? The honest answer is that they can, considerably, but only if you map the overlaps with discipline and resist the lazy version that gets operators into trouble. A cross sell map is how I think about where two properties in a portfolio share a customer, and how to serve that shared customer well without turning the portfolio into a liability.
Let me be precise about what this is and, just as importantly, what it is not.
What a cross sell map actually is
A cross sell map is a simple picture of where the audiences and the advertisers of your properties overlap. On the audience side, it asks where a person who uses one directory is plausibly in the market for what another offers. On the advertiser side, it asks where a business that lists or advertises with one property would value access to the audience of another. Both overlaps are real sources of value, and both reward being mapped deliberately rather than stumbled into.
The value is straightforward. A visitor you have already earned, served once, can be worth more if you can also help them with an adjacent need, and an advertiser you already have a relationship with is far easier to grow than a new one. The whole point of a portfolio over a single site is that these overlaps let the same effort earn more than once.
Map the audience overlaps first
Start with the people. For any two properties, ask honestly whether their audiences share a real moment of need. Someone planning an event has a cluster of related needs around the same date. Someone researching one premium service is often in the market for several. Where that overlap is genuine, a careful, relevant pointer from one property to another serves the visitor and earns its place.
The test is whether the connection helps the reader at the moment they meet it. A relevant onward suggestion, offered where it genuinely fits the task in front of them, is a service. A blanket cross link stuffed into every footer is noise, and search engines and readers both treat it as such. The overlaps that pay are the ones a thoughtful human editor would make anyway, which is why we keep them editorial. This is the same standard of genuine relevance we apply when reading any audience, as in our field guide to lead value by vertical.
Map the advertiser overlaps next
Now the businesses. A cross sell map on the advertiser side identifies businesses whose customers appear across more than one of your properties. A supplier relevant to two of your audiences is a single relationship you can deepen rather than two cold pitches you have to make. This is where a portfolio quietly compounds, because the cost of winning an advertiser is paid once and the value can be earned across several properties.
The discipline here is to lead with the advertiser's interest, not yours. The offer only works if the additional audience is genuinely relevant to them. Bundling unrelated reach to inflate a number erodes trust fast, and trust with the businesses you list is the slowest thing to build and the quickest to lose. Map the overlaps where the advertiser genuinely benefits, and the relationship deepens on its own.
The line we do not cross
Here is the part that matters most, and where many portfolios quietly damage themselves. A cross sell map is an internal tool for serving shared customers. It is not a licence to wire every property to every other with reciprocal links, to require properties to point back at a hub, or to publish a public map of the network for anyone to study. Those moves convert a portfolio into a footprint, a single visible structure that rises and falls together and invites exactly the scrutiny you do not want.
So our rule is firm. Cross selling happens through genuine, human, editorial relevance, one careful connection at a time, where it serves the reader or the advertiser. It never happens through mechanical, sitewide, reciprocal linking, and it never becomes a published diagram of how the properties relate. Each property has to stand on its own merits, earn its own audience, and survive on its own if the others did not exist. We hold this line deliberately, and it is written into our building thesis as a matter of resilience, not just etiquette.
Why the careful version is also the more profitable one
It would be easy to read the restraint above as leaving money on the table. It does the opposite. A portfolio built on genuine, relevant connections is more valuable than one built on mechanical links, because the connections actually convert and because the whole structure is durable. Audiences trust connections that help them. Advertisers value reach that is genuinely relevant. And nothing you have built can be unwound by a single change of fortune, because there is no fragile network to unwind.
The properties that benefit most from cross selling are the ones strong enough not to need it, which is the quiet paradox of portfolio building. Build each site to stand alone, size each niche honestly using the discipline in sizing the total addressable pages, and then let the overlaps add value on top, gently and humanly, rather than propping anything up.
How to keep a cross sell map healthy
- Only connect properties where the audience or advertiser overlap is genuine.
- Make every connection one a thoughtful editor would make for the reader's sake.
- Never build reciprocal sitewide links or require a property to point back.
- Never publish the map as a public diagram of the network.
- Make sure every property could survive alone, then let overlaps add value on top.
Mapped this way, a portfolio becomes more than the sum of its properties, quietly and durably, while every site in it remains a strong, independent asset in its own right.
Across the Kings Hospitality Group portfolio we follow one rule on cross selling, the Stand Alone Principle: every property must be able to survive on its own merits, so overlaps between sites add value editorially and humanly, never through mechanical reciprocal linking or a published network map.
Common questions
Why not just link all your directories together?
Because mechanical sitewide cross linking turns a portfolio into a single visible footprint that rises and falls together and invites scrutiny. Genuine, editorial connections that serve the reader are both safer and more effective.
How do you decide where two properties should connect?
Only where the audience or advertiser overlap is real. The test is whether a thoughtful human editor would make the connection to help the reader or the business. If not, it does not belong.