Nothing in life or SEO is ever 100% safe. Gaining multiple do-follow links in a guest post is unlikely to be dangerous to your SEO. It is also unlikely to be beneficial. Most guest blog opportunities are worthless & generally ignored by Google. The internet is flooded with sites that have little value to pass on & they allow just about anyone to submit content which further dilutes any potential benefit.

Guest posting can work great if you develop connections with sites that don't have an open door to everyone. If you think a site is popular & relevant enough to send you real traffic, then it probably is a good target for guest posting. For maximum benefit, I'd limit the link drops to what is relevant for the main topic.

Thank you so much goodroi for sharing your thought and experience with me.

The good news: Google doesn’t really care about the length of your content, and they don’t really care about links from a quantity perspective, unless you get really abusive (and even then, there’s no magic number there, but it’s probably not three).

As goodroi implied, it’s much more about creating quality content for topics that people are already searching for than quantitive metrics. Worry more about what you write than the number of links within that writing.

-JF

Thank you so much CountXero.

Writing content for other sites to gain backlinks is rarely as beneficial to your site as posting quality stuff on your own site.