This isn’t genealogy-related but I suspect it will be popular with genealogists and a few million other people as well: save and share an UNLIMITED number of photographs. Anyone in the United States with an Amazon Prime subscription can now upload an unlimited number of pictures to Amazon Prime Photos at NO EXTRA CHARGE.
I guess it isn’t really free because the service requires a (paid) Amazon Prime account. However, anyone who is a Prime member can store unlimited photos at no extra charge. As a Prime member, you also receive FREE Two-Day shipping (or better) on most Amazon orders, and exclusive access to movies, music and Kindle books, again at no extra charge.