Do you mean sites where Google is willing to rank a profile highly (for a personal or business name), thereby making it harder for some negative comment to float to the top of the rankings? If so, then yes - those are often well-ranked sites.
I also find that guest writing with a byline on a quality site, or even better, being interviewed on another site, can also rank quite well. The key seems to be good outreach.
[edited by: tedster at 1:51 pm (utc) on Aug 4, 2011]
Here is a tip: Google something along the lines of "social media name check", there are a few sites that allow you to check the availability of user-names across multiple social media type sites. From there, I would sign-up for all of them with the persons name or company name you are trying to bury negative information about. If the name in question is not super competitive, you should be able to fill out the top 10 or 20 with a little interlinking of profiles and basic on page SEO, etc.
Will there come a day (or hasn't the day already arrived) when "playing games" to boost one's reputation takes a bad situation and makes matters x2+ worse? Situations that sometimes/oftimes can be remedied by a customer service touch-up or simple apology or acknowledgement?
Can "technical patches" transform errors or mistakes or simple human falliability into something/someone far worse?
Also, at some point, can such efforts cross the line of various criminal statutes? FTC rules? Consumer fraud? Deceptive Practices Acts?
"Hey, I'm just registering my identity. What's the harm in that?"
Sounds reasonable. However, when you register that ID and then "do nothing" @ Site-X,Y,Z+ post-registration, will that now become the hallmark of someone or any company that is acting "just to raise its defenses"?
Ergo, the new signal of "useless, misguided or ill-guided 'social spamming' = "bad reputation signal" becomes exactly what you are describing? Lots of registered IDs with no or tiny "social contribution" (at the various sites)? That is "a shallow social profile" = social spamming = points off?
If I was programming a system to "give points" for social activity I'd definately take major points off for cluttering the social space and adding no value.
Just like, perhaps, certain sites that were whacked by Panda and its earlier versions/effort? "Thin social profiles" = the new "thin site"?