When you finally decide to send your poetry, don't send more than 3 or 4 poems, and don't send a long personal letter or get chummy with the editor. As a matter of fact most publications have very clear directions on submissions. Also, it's a good idea to keep track of what you sent and to whom. The Internet has many influences on the arts, depending on who is sending and who is receiving. There are so many articles about poetry by distinguished critics, so many discussion groups, so many workshops, so many chat rooms, so much information available at your fingertips, that it's almost overwhelming.
Some people feel they're drowning in poetry, they suffer from overexposure.
But that, of course, is up to the individual. You control the WEB and you know how much time you have to spend. It's the same in every field. If you wish to explore any area in any subject, it's there waiting for you. The Internet is really a huge repository of information and you can make it work for you.