Take a look at this support article about how to use tags properly in order to appear in the Reader:
Your posts will appear in the topic listings of any tags or categories you use. Therefore, assigning tags and categories to your post increases the chance that other WordPress.com users will see your content.
However, you don’t want irrelevant content showing up on the topic listings or search, and neither do we. That’s why we limit the number of tags and categories that can be used on a public tag listing. Five to 15 tags (or categories, or a combination of the two) is a good number to add to each of your posts. The more categories you use, the less likely it is that your post will be selected for inclusion in the topic listings. Learn more about Topics here.
On one post I looked at you had 19 or 20 tags.
I'd also say that your tags are quite general:
consider how many of the very large wordpress blogging community use such generic topics as:
Blog, Blogging, Blogs, Business, Consumerism, Culture, Entertainment, Honesty, Internet, Media, Meditations, Morality, News, Newsvine, Social Media, Technology, Truth, Work, Writing
So even if you were using fewer tags (and btw "uncategorized" counts as one of your tags! The most vague term of all), you are not being specific about what each post is about.
For example, if only 100 people write about "honesty" in an hour, your post with that tag "honesty" will be quite far back in the que of older posts on that topic.