LinkBlip is a service which let you monitor an URL. If someone visit the link, you will receive a notification email.
Both LinkBlip and SpyPig work in similar way. SpyPig will send you a notification when people open your email while LinkBlip will notify you when people visit your link.
Sometimes, you create a birthday E-card for your friend and you want to track whether they open it or not, then you may try this service. Simply provide your email address and URL that you want to keep an eye on. LinkBlip will then generate a short URL for you. Send your friend this URL. When they open it, you will receive a notification email.
LinkBlip will also show you the recepient’s city and state. The main advantage of this service is its simplicity and easy to use. You can also use LinkBlip as a URL redirection service.