Previously, I tried using the automatic Pinterest RSS Feed but to no success. I even tried posting on the WordPress.com forum but again it did not address the problem. (To be fair, this is probably a problem on the Pinterest side.) Hence, the conclusion is that currently the WordPress.com to Pinterest automatic posting does not seem to work. (It apparently works for WordPress.org users according to my search on Google.)
Thus, I have manually added some pictures from Mathtuition88 (including reblogged content) onto Pinterest. Feel free to share it!
Manually adding pictures onto Pinterest is quite tedious and time-consuming. I will be monitoring how much effect Pinterest has, in terms of channelling traffic.
Just testing my Pinterest RSS Feed. Set up a Pinterest account long ago but did not use it. Apparently Pinterest is useful for SEO, even more useful than Instagram which is mainly for branding. This is because Pinterest has backlinks pointing back to your original website.
Connect RSS feeds to your Pinterest business account and automatically create Pins from the content on your website. When you update your RSS feed, your content will be added to your boards as Pins within 24 hours.