There is something that can be done about obscene, indecent and profane broadcasts (including commercials, ads, etc.) This is right off of the FCC website. Pass it on and report the issues, enough is enough!!
I found the best solution was to ditch Roku! Google TV offers a kid profile without ads and allows parents to protect adult profiles with a password. My kids no longer see nasty Roku ads and I tell everyone I know how much Roku sucks at protecting kids and providing family friendly content. They claim it can't be done. Google did it! I switched and couldn't be happier.
I agree with this post as well. there should be a way to set a rating for the ads and promos that pop up on the Home Screen. Lately, the promos have been nothing but scary movies or shows. This is a tv for use for the whole family. I see that this has been discussed on the board for years now....this is obviously something Roku should address .