Agree with others' points that this skill meter is subjective, arbitrary and might not add much value. I created it initially more as a option to make the resume design to look more creative and appealing in design. I did called it out that it is an optional section, but yeah, agree that this section seems to require more thoughts. I create an issue to keep track of this: https://github.com/xitanggg/open-resume/issues/11
