What is tag?_ application skills

Tag is a good technology, originally this site wants to achieve level two classification and keyword function, you can classify a lot, update is a problem, always can not update this category and everywhere from the internet excerpt it. The emergence of the tag can be a good solution to this problem, it can also achieve a lot of similar categories or keyword tag, visitors can access the relevant log through the tag, I feel like a keyword. This feature is easy to implement in the near future, without any difficulty, but with personalization and clustering issues in mind. OK, let's find out what tag is.

Here is the original: http://blogbus.com/help/whatstags.php

Tag (tag) is a more flexible and interesting way of logging, you can add one or more tags for each log, then you can see all the Blogbus and you use the same tag of the log, and thus with other users to generate more contact and communication. Not only that, we also through the cooperation with Technorati, your tag sent to the global blog space, and people around the world to share.
Tag embodies the power of the group, so that the correlation between the log and the interaction between users greatly enhanced, you can see a more diverse world, a more relevant blog space, a hot spot real-time broadcast news. Tag provides you with an unprecedented network of new experiences ...

Of course, you can also simply interpret a tag as a log category, but the difference between tag and classification is obvious:
1. First of all, the classification is that you set up before writing the log, and tag is added after you write the log;
2. Second, you can at the same time for a log paste several tag (tag), convenient to find themselves at any time, and the original log can only have a classification;
3. Again, when you accumulate a certain number of tag, you can see yourself in the blog most often write what topics;
4. Finally, you can see who is using the same tag as yourself, and then find a blogger who shares your interests.
Give an example, say: You wrote a log to the West Lake Tourism, originally you are put this kind of log into their "Donkey Row World" category, but with the tag, you can give this log at the same time, "tourism", "Hangzhou", "West Lake", "Donkey Row World" and so on a few tag, When the viewer clicks on any of the tags, he can see your blog. At the same time you can also by clicking on these several tag, to see who has recently been to Hangzhou tourism, perhaps you can also exchange the experience of tourism, become the next travel partner it!