You might have noticed the recent new feature on posterous which gives you the option of adding 'Tags' to your blog posts.
Tags serve a variety of purposes. I thought of listing down a few that come to my mind:
1. Helps your visitors to check posts of particular interest thus serving as 'categories'
2. Helps you in gaining a few more clicks by having better chances of turning up on search results since tags have their own url. So, be sure to tag your posts with relevant keywords. They really do help in getting search engine traffic. Although currently we cannot analyze these things, I'm pretty sure the folks at posterous would provide some way of traffic analysis to us (may be by way of a tie up with google analytics, sounds interesting?)
3. If you blog on more than one niche, you can use tags to post links related to a particular niche on other similar blogs, forums etc.
So go ahead, put up some relevant tags to all your posts, old and new. You can add tags to the posts that you email by writing the tags in the 'subject:' as ((tag: nischal, posterous)). So if the title of your post is 'Tags in posterous' and you need to add two tags to the post named 'categories' and 'Make your posterous better', then your subject line would look like:
Subject: Tags in posterous ((tag: categories, Make your posterous better))
If you know of anymore uses of 'Tags' then feel free to list them in the comments.
