tracking

问题 Most services offered online today that claim to \"track\" e-mails, do so by embedding images in the emails. My questions are: Is this the only way to do it and if not, what are the other methods? Are any of the methods actually fool-proof? Has anybody had any luck with specific software or even an online group? 回答1: Yes, this is pretty much the only way to do it. Consider that an email is something that is inherently static. The only way to know if someone has "opened" an email is for the

问题 Since Facebook introduced hashtags, I\'ve been interested in finding out more about them. Can someone point me in the direction of possibly tracking the hashtags similar to how twitter allows us access to pull hashtag data via their API. I can count mentions, get usernames, and the tweets. Has Facebook launched anything similar? I can\'t find any documentation online. 回答1: There is currently no API for the hashtags feature on Facebook edit : there was however a public posts search function

问题 Normally, the referrer is traceable through: JavaScript\'s document.referrer The request headers, e.g. PHP\'s $_SERVER[\'HTTP_REFERER\'] I have set up a Codepad demo which shows these properties, for testing purposes. Requirements: The original referrer should effectively be hidden, at least for all mouse events. Cross-browser support (at least Chrome and Firefox). Stand-alone, without any external content (plugins, libraries, redirection pages, ...). No side-effects: Links should not be

问题 I am in charge of about 100+ documents (word document, not source code) that needs revision by different people in my department. Currently all the documents are in a shared folder where they will retrieve, revise and save back into the folder. What I am doing now is looking up the \"date modified\" in the shared folder, opened up recent modified documents and use the \"Track Change\" function in MS Word to apply the changes. I find this a bit tedious. So will it be better and easier if I