I Made It Past My Social Media Roadblock!

First I want to thank everyone for their awesome response to my last question about social media and what the heck is it? After reading over all of your answers and responses, I was able to get a start in developing social media skills, and created a group in a few places like Facebook etc. I am still watching training videos and reading articles provided my members and continuing to improve and progress further through training. Now I'm faced with having to create a Gravitar in order to complete a review for a fellow member for an embarrassing topic but one that many of us face. I was happy to do the review, but disappointed that I couldn't submit it without this Gravitar thing. Why is this necessary? I did several reviews without having to use one before. Will I have to write my lengthy review of his website over again once I leave to create this thing? I appreciate your help and feedback. Thank you in advance!