You can now contribute to a DNA match survey that will be used to develop better tools for genetic genealogists: https://docs.google.com/…/1FAIpQLSd8GKIiL9n…/viewform…

What’s different about this survey? You’ll find that it’s much more comprehensive than most datasets that have been collected in the past. This includes the total amount of IBD sharing between full siblings and any X-DNA shared between matches at 23andMe. For Ancestry, the number of segments will be collected. The known relationship is chosen from a drop-down so that those are standardized and you can enter multiple relationships if those exist. There will even be opportunities to add additional information from GEDmatch if you want.

This survey is being conducted scientifically and will benefit the community for decades to come.
A spreadsheet is available for those who want to submit multiple entries at a time.