In Brief: InfoSec Island may not post what you submit, but instead grab text from your blog (whether authorized or not). When I filed a complaint, their first response was to threaten to delete the post, and they ultimately deleted my account (and then posted the entire email exchange to pastebin). If you post to their site, then don't be surprised if you and your post are abused. If you complain, expect to be told that you don't matter. In the end, despite being urged to reach out to me, they have not taken steps to resolve the matter.
Strong Recommendation: If you're a writer, I cannot urge you strongly enough to avoid or flee InfoSec Island. If you're a reader, then I strongly recommend that you not use their site any further. A business that profits from and exists because of the free contributions from people like me do not deserve continued patronage when they clearly disrespect the people who provide the content upon which they base their business.