One key for any entrepreneur today is to avoid Spamming. Spam is most frequently referred to as unwanted and unrequested emails, however the name can really go much deeper. Spam can be emails, but it can also be phone calls. It is important to build permission assets instead of using anything that might be considered spam.
Seth Godin has a great post about how even companies like Dell and The Better Business Bureau are engaging in spam practices. Practices that can only hurt their reputation.
Here is the link: