Permission is given to copy photos that I've uploaded to someone's memorial. Giving credit would be really nice and is only proper.
If you wish to ADD or EDIT biographical data on a page, USE THE EDIT TAB on the upper right side of each person's memorial page. Registration on Findagrave is first required, and is free. I check this site a several times a week, but only RARELY check email. I can't tell you how often I get an email asking that I add data to a memorial, but the all-important Findagrave number isn't included. Using the EDIT TAB to make a request automatically shows me what memorial I can easily edit.
NOTE: From a parent's memorial I am unable to add or link to their child's page. However, Findagrave DOES allow the manager of a page to link to that person's parents. But not the other way around. Again, please use the EDIT button to request descendants be linked to their parent(s).
While researching news archives, I may find an obit to upload here. You are welcome to copy it to Ancestry or another family history site as long as you properly source it: give name and location of paper and the date published. (I've spent untold hours searching for a date on an unsourced obit given me by family. Source it!)