When you send an email to certain recipients (but not necessarily all), are they coming back as rejected? If so, one of the causes may be your IP address, a unique number sequence that identifies each computer attached to the Internet, is in one of the blacklist databases the recipient’s mail server checks.

Adding a YouTube video to your web page can be beneficial by saving you the cost of hosting that video and by drawing additional traffic to your website that self-hosted video could not do.

The Like button lets a visitor to your site share your content with their friends on Facebook. When the visitor clicks the Like button on your site, a story appears in the visitor's friends' News Feed with a link back to your website.