The spirit world is forever with a lot of folks who still believe in the supernatural or divine agency. There is often some need for the experts that may be working this field. These will be folks who have their own experiences about the supernatural. More often than not these are followers of certain spiritual beliefs or systems.
There may be more that can be had through the agency of one such expert. Experts like the San Diego medium for instance will have a lot of clients. But not that these clients are not discerning themselves or do not have a firm belief or basis for their own spiritual needs, because even high society folks may be part of the clientele.
The network that works with spiritualists or mediums is often one that is organized. These are better because they actually work with some tried and established methods of practice which are based on fundamentally sound systems. These systems were developed from the long centuries when religious beliefs were often superstitious.
But superstition is something that might be related to wrong beliefs, and not about the existence of the spirit world. Even the most die hard scientists will often have their own spiritual leanings. And this is not because they are actually great believers in these but have concluded that science cannot answer for everything.
This is all about the higher divinity and the higher concerns in the universe. Science is actually limited in the sense that it cannot actually precisely account for all things that may be around. In fact, at the higher levels, science is often wishful thinking combined with wild speculation even as governments are willing to pay scientists to work for them.
Their budgets may account for billions but the new things that are found are actually more confounding. Thus the medium is somewhat more believed these days because they work with more solid results. The divine or spiritual world though is nothing to be messed with so you have to contact those experts who are really worthy.
The more these are reliable, the better your chances of being able to contact the other side. Some folks simply want the opportunity to really speak to the spirits of the departed. And some want clarifications about some mysterious even that has to be cleared up so that things are righted or balanced.
The good medium is somebody who knows how to protect you. In fact they work with the portals to the other dimension with spells and various agencies. They should know enough to deal only with sure things and not those which could be riskier, especially since no one really knows what can come out from the other side.
The stuff that is being marketed for those gullible enough not to check credentials are varied. But in San Diego as any major city in the US there are acknowledged leaders of the field. These will not even advertise at times and rely on a network of those they have helped to provide references.