This makes sure you stay in their minds. It flatters them to think that their opinions matter and they will be more inclined to do more for you. Do not waste their time, however. Do not become a nuisance and send them things too often. You have to realize that these are very busy people, appreciate that and only send information to them when you have something to report.
Most areas have public access television.
For a nominal fee you can produce your own TV show. While this does offer somewhat limited exposure it can reach a different marketplace for your music. They will take your noisy tape, re-produce, take out the tape hiss and put it on a CD for you. Treat your band as a business you love and you may be rewarded by a successful band. As long as you remember that, you can find an almost infinite number of methods to achieve your objective.