If you have profiles online or your own web sites or blogs, you will get an email from that person interested in talking to you. In general I advise against posting phone numbers because you get all kinds of time-wasting phone calls. If someone responds an email there are several advantages: The person has to organize some thoughts and express what he/she is looking for. You can respond at your own pace while a phone call may interrupt you anytime and anywhere. If the email seems idiotic or a waste of time right off the bat you can just delete it and not waste any more time.
