At first, I didn't really get on, but lately have rekindled an interest in the site. The best way I can describe it is a Pinterest that is mainly for home and diy projects, and instead of only one image with a short description, you can look at a mini-blog post with an overview of the project.
It is also helpful for bloggers, since we can share more of the specifics of our projects, and to a more specific set of readers. The Hometalk community feels significantly smaller than Pinterest, which allows you to actually interact more with other users. Unlike Pinterest, clicking a clip takes you back to the original post, so you can always connect with the writer of the content. Just like you can comment on a blog post, it is typical in the Hometalk culture to comment on others' projects.
Maybe I'll see you there, don't forget to connect with me on Hometalk if you have an account!