I mostly use ancestry.com and would prefer to change to geni.com, but. When perusing geni listings online (not within the geni program), you can NOT click onto relatives unless you go round-about and click on one of their progeny and backtrack. It's a PITA, frankly.
Also, while inputting data into the geni profile within the geni program, it is also a PITA. If you want birthdates configured a certain way, make you programming do it automatically.