As of a few days ago my blog is no longer getting any google searches and is cannot be found on the topics pages of wordpress. I read the article about having too many tags – maybe I was doing that…. so today I posted a new post with less than 15 tags but it still hasn’t appeared on wordpress topics page etc.
It’s good that you read the reasons for non-appearance of posts on the Topics pages here > http://en.support.wordpress.com/topics/#missing-posts
If you had a post previously with more tags than the limit, it may take a few days for your blog’s new posts to start displaying again.