Don‘t write an essay; get to the point. In other words, address the Five Ws in your opening paragraph. Do not waffle on about the issue, your life, your pet cats... oh and did I tell you about Mike‘s pet frog?
From personal experience, triagers typically have to triage around 180 reports a week (this may be more now ... I am looking at you, still). Do you think triagers want to hear what Wikipedia has to say on XSS?
Without breaching the terms of the bug bounty program‘s policy, focus more on the exploitability of the issue by illustrating this in your proof of concept rather than emphasising the type of vulnerability you are reporting. Let the impact do the talking; not the bug class. If you end up disagreeing with the final bounty amount, highlighting your description of the exploitability allows for civil discourse. You do not end up arguing hypotheticals with the program.
I once accidentally opened a NSFW report from the pre-submission inbox. The rest is left to your imagination. My reaction could be best described as:
