I'd go one step further: Not only should you have your logo link back to your startup's main home page -- you should include a simple text link, with the right

I'd go one step further: Not only should you have your logo link back to your startup's main home page -- you should include a simple text link, with the right keywords in the anchor text, to link back. This is for search engines (so if your blog pages start to accrue some SEO authority, you can pass some appropriate link-love back to yourself).