WordPress.com is a website that offers hosted blogging and allows anyone to start a WordPress blog with only a few clicks. While that makes it easy to get started with blogging it has the disadvantage that you have less control over your site and you can not use plugins, since it is not allowed on the platform.
Because WP Robot is a WordPress plugin it can not be used on hosted wordpress.com blogs. WP Robot allows you to do autoblogging on self-hosted WordPress.org blogs only.
For autoblogging to WordPress.com we recommend our sister product CMS Commander, which has a feature that allows you to automatically post to WordPress.com blogs via email. The feature is easy to set up, works via any email account and allows you to create content from over 20+ sources on your WordPress.com blogs – just like WP Robot can do for you on a self-hosted site.
In the same manner CMS Commander can also post content to Blogger, Tumblr and other hosted blogging platforms that work like WordPress.com and have a “post via email” feature.
To learn more about WordPress.com autoblogging in CMS Commander have a look at this article or you can try it out by signing up for free here.