How do you propose that would be enacted in this case? How to force google to forget the contents of your comments but not the rest of the page?

I'm all for the 'right to be forgotten', it seems a useful counterbalance to the ease with which data is vacuumed up and re-packaged for easy consumption by seeker and stalker alike but I fear there will be a lot of practical problems implementing this.

One thing I have a lot with reocities is people asking to have specific guest book entries deleted from geobook pages. This is a ton of work to do right and even then it doesn't really help due to the enormous amount of data copying that has happened. It's pretty double because I get at least as many requests from people that want to retrieve stuff that is irreparably lost.

Digitally forgetting something is hard to get right, almost harder than keeping it in the first place.