Find me some Leads

I want someone to research bloggers of a certain type (described below) and produce a spreadsheet which lists: the blog website address, the bloggers name, the bloggers email address. All three of these items must be present for each entry. The blogs must meet the following criteria: 1) Contain at least one blog post made in the last 10 days. 2) Contain at least six posts in the last 90 days. 3) Be on one or more of the following topics: Online marketing Web content strategy Web analytics User engagement Customer acquisition 4) Be of a high standard of writing, with blog posts of a reasonable length. I would like to acquire the details of 50 such websites, roughly split equally between the above five subjects, i.e. approx 10 of each.