Originally Posted by NateDesmond

Adding it to your original site has a number of advantages:

- Customer does not have to manuver between to sites

- It makes your main site bigger

- It makes your main site more likely to be found in search engines

- It makes it easier for visitors to your main site to find your blog

Here are the advantages for having your blog of site:

- You can get a backlink from your blog (But do not put too many!)

- You would have two domain names for customers to find.

- If you had great content on both your blog and site, the blog and site could end up being the first two results in search engines.

Overall, I think the decision depends on the amount of content you have ready and the time you have to make more content.