Is there a policy SE again citation or posting related external link one's own blog or research as opposed to a link written by someone else?
Assuming that you're asking about links in answers (rather than asking about questions), I think that the policy is the same for links to your blog as it is for any other link, i.e.:
It should be in reply to someone else's question
It should be directly relevant to your answer, which must be relevant to the question
It should be a specific link to a specific article on your blog. You mustn't just link to the whole blog.
Linking to the whole blog (i.e. to the top-level page of the blog) would be like linking to http://youtube.com or http://wikipedia.com or http://google.com -- your answer is supposed to tell the OP exactly where to find something (not tell them where to go and search for something).
It should include a summary of or perhaps a quote from whatever you linking to. This guideline (quote or summarize as well as link) is as true for audio/video links as it is for links to text articles.
Anything else is called a "link-only answer" and is discouraged. People should find your answer interesting and readable even if they don't follow the link you posted. The quote or summary should demonstrate why and how the link is relevant to the answer to the OP's question.
It should include the title of the linked article in the hyperlink. For example, Sabba Sutta: The All (SN 35.23) is a better-formatted hyperlink than http://www.accesstoinsight.org/tipitaka/sn/sn35/sn35.023.than.html
In general if what you post is not specific to the OP's question, if it's something you could post in answer to every or any question, then it's not an answer to this question and you shouldn't post it.
This answer defines the Meta SE policy on this topic.
I quote it below:
In my experience, posts with links are not downvoted if all these conditions are met:
- you paraphrase the content of the linked item (possibly omitting details or examples)
- you identify the author (yourself, MSDN, etc)
- someone could benefit from the answer without reading the linked item at all
- you include information to let the reader decide if clicking the link is worthwhile
You can use the CircularLabelsStyle custom property for this, for example:
chart1.Series["Series1"]["CircularLabelsStyle"] = "Circular";
I blogged about this last year, with some sample code.
The other extreme, an answer that says nothing more than "here" or "read this" or "please read" and is a link, I will not just downvote but flag as not an answer, and I don't care whether it's the definitive documentation from the owner of the technology, another question on the same SE site, or just a blog you wrote yourself.