Any business owner wants high returns on his or her investment at all times. However we never know for sure what will or will not help. One way to get your business information to the public is through directories.
There are many internet directories which list details of online business that are bifurcated by the type of products and services. One has to submit the business details to these directories which are then manually selected by them based on certain criteria. I suggest you do not use a service that simply blasts your information to hundreds or directories. It is best to pick those that are relevant. Typically you only put your main domain, in other words not all your pages but your main site.
One of the largest such directories is Google Places which helps your business to be found on Google. The service is free. People can find, share and rate your business. Google places is very powerful and I suggest you give it a try.