Who's linking to your blog? Who's linking to similar sites? Is a blog worth plugging to?

[Tags: interactive pr, pr, SEO]. Those are three of the questions which Blogpulse, a blog monitoring service, answers pretty well. The profiles page allows you to enter a URL and find out who is linking to a certain blog, how often the blog posts, and what sources the blog itself cites. You can also use it to search the blogosphere in general on keywords. Nice.

Oh, and I've also noticed the clever Trends feature, which highlights current trends in the blogosphere.