Freaked out? No.
Should you look at them? Yes.
That flag is set when it discovers that someone using your Admin has submitted data in an <input> form field that contains potentially risky content like < and > symbols such as could be used to stuff <script> tags into content.
The flag is set to tell you to make sure that you knew about the content being submitted, by basically alerting you to pay attention to those log records specifically.
If you did post the content it mentions and intended it to contain whatever it contains, then of course there's nothing to worry about.




