When their ToS says "Pin your own content here", then says, "Thank you, now we can do anything we want to with it, including sell it," that's going too far.
That would be like Flickr claiming they (not you) had the right to sell your photos. Or Rackspace claiming they had the right to sell anything you posted on your web site.
This ToS is an extreme overreach, and your casual dismissal of that extremity is itself cautionary -- what can happen when one becomes too saturated with the 70+ hours of ToS reading a typical Internet user would have to do each year to keep up.
> "Thank you, now we can do anything we want to with it, including sell it,"
If this part (obviously this isn't the exact phrasing) was removed, then they wouldn't have the right to serve your content on their site. They couldn't use a screenshot containing your content in any advertising they did. They couldn't use your content alongside advertising. They couldn't do a lot of things they do now.
Allowing someone to upload something doesn't inherently give you any rights to use that content. If you remove the parts you are complaining about, then they can't do anything that they are doing.
When their ToS says "Pin your own content here", then says, "Thank you, now we can do anything we want to with it, including sell it," that's going too far.
That would be like Flickr claiming they (not you) had the right to sell your photos. Or Rackspace claiming they had the right to sell anything you posted on your web site.
This ToS is an extreme overreach, and your casual dismissal of that extremity is itself cautionary -- what can happen when one becomes too saturated with the 70+ hours of ToS reading a typical Internet user would have to do each year to keep up.