Hi .. Some of my blog posts, are ones that I wish to update with more quality and relevant content. These are posts that are already indexed. Is there anything wrong with doing so ? Thanks
That would not be a problem at all. But make sure that your content is better than the previous content and original. If you fulfill this your SERP would only increase and not have any negative impact.
You say these blog posts are already indexed... but are they getting any traffic? Do they have good ranking? If not, then I wouldn't worry about making changes. But if the content is driving traffic, I would make sure the changes are minimal so it doesn't affect your search engine positions...
Three options and both have their good and bad points. Update the old posts and you might get the spiders to revisit the page and hopefully respect it more or get you ranking for some additional keywords. Or, create a new post entirely, a part II or update. You would get the new information out and could include a link to the original. And don't forget to update the original with a link to the new article. Or, do both. If you have the time and enough ideas, your best bet would be to do both.
You have every right to correct, improve, change it. You can do it at any time and also any number of time. No one can stop you from doing it. Mainly because it is your own baby- No one else can claim or express about it.
If you are posting fresh and fair content for your blog or any website. It best for your site. It help to Improve site ranking or traffic also.