The likelihood that you will be found by a particular squirrel looking for acorns is slight unless you clone yourself and have many copies of yourself on the Internet for the squirrels to find. Any marketing expert will tell you that the secret to successful marketing is reach and frequency. What they mean by this is that you have to touch as many potential customers for your services as possible and as often as possible. The phone book reaches many people, some of whom will use it to search for a lawyer. Television reaches many but the cost of using it to deliver your message frequently is high.
Direct mail is expensive to reach many people frequently.
The more times an advertising program reaches a given population, the more likely that the target market will react to the message. All advertising programs rely upon the theory of large numbers. The great thing about the Internet is that the reach is worldwide. The trick is to achieve frequent delivery of the message to potential clients. In order for them to do you so, you must have an Internet presence and you must publish its existence in as many ways as possible.