Many blogging software packages automatically nofollow user comments, but those that don't can most likely be manually edited to do this. This advice also goes for other areas of your site that may involve user-generated content, such as guest books, forums, shout-boards, referrer listings, etc. If you're willing to vouch for links added by third parties (for example, if a commenter is trusted on your site), then there's no need to use nofollow on links; however, linking to sites that Google considers spammy can affect the reputation of your own site. The Webmaster Help Center has more tips on avoiding comment spam39, for example by using CAPTCHAs and turning on comment moderation.
No matter what your video is about, publishing it on your blog is a must. Home to informative, educational content, as well as more brand-specific marketing content, visitors will expect your blog to host any and all relevant product news you have to share. Better yet, if someone is browsing your blog, they’re ready to commit time to your content. What better way to engage them than video?