I am advised by WordPress.com support that this is a known bug and they are still working on fixing it as an issue. Currently they suggest a manual workaround to overwrite the unwanted parent theme styles.
WordPress.com does not allow you to post javascript. From WordPress.com Support: Users are not allowed to post JavaScript on WordPress.com blogs. JavaScript can be used for malicious purposes. As an example, JavaScript has taken down sites such as MySpace.com and LiveJournal offline in the past. The security of all the blogs is a top priority … Read more
Go to your site’s dashboard. Then navigate to Settings ยป Discussion and disable the “Allow link notifications from other blogs (pingbacks and trackbacks)” option:
Photon is the part of jetpack that uploads your images to wordpress.com so they can be served from their CDN. You can turn it off here: yourdomain.com/wp-admin/admin.php?page=jetpack_modules&module_tag=Photos%20and%20Videos
Try Postie. http://wordpress.org/extend/plugins/postie/ It has lots of features (including handling attachments and inline images)
WordPress.com is running the same code that you can download for free at WordPress.org … the biggest difference is that .com is run by a for-profit company and .org is maintained by a non-profit community. WordPress.com, as a for-profit enterprise, has certain features disabled (for security purposes) and certain features limited so that users can … Read more
Self-hosted blogs use RSS for subscriptions. As far as “liking” goes, that only makes sense within the quasi-social-network environment of WordPress.com.
WordPress.com is web service. WordPress.org is software product. Think bus vs car. You can ride both, but bus is owned by someone else and what you can do with it is limited.
How to import only certain comments from post[s]
You could use Site Redirect from WordPress.com (https://en.support.wordpress.com/site-redirect/) to achieve this. While this is a paid for service, it is relatively cheap and you will likely only need to pay once. Nice site, and as redirects are essential for SEO, it is well worth the effort and small cost to get this right.