In contrast, MailChimp doesn't include taxes with purchase amounts in email campaign reports, and continues tracking indefinitely, on a per-contact basis. Creative-level trackers are the lowest level of segmentation and do not accept any incoming structure data from the URL. Another privacy problem is that many services' shortened URL format is small enough that it is vulnerable to brute-force search. WP.me is spam-free, because we are constantly monitoring and removing spam from WP.com. Bit.ly, which is what we integrate with in CoSchedule, uses a 301 redirect.
Example for event tracking using the newer API: Previous Next
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