Depending on the user, their browser settings, and who-knows-what-else, things might break occasionally. Whatever URL shortening service you use, you should probably read through their help to determine whether they also make their links permanent. Clicks per unique opens Percentage of recipients who opened your campaign and then clicked a link.
Typically, data: and javascript: URLs are not supported for security reasons. This tool is especially useful if you want to detect click-fraud, see real-time click stats, and measure social media traffic. Additionally, if the file is moved outside the domain or within a workgroup, it is found. Use Custom Short URLs in my books and newsletters to encourage trust and build brand loyalty with fans. If a user renames a file, it breaks the links to the file. Every blog and post on WordPress.com has a WP.me URL now.
Social media dashboard and notifications to gauge the impact of my social media marketing; alerts me to sudden changes in discussion volume and helps identify brand publicity issues.
Example for event tracking using the newer API: Previous Next
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