Currently, most online social networks focus heavily on one-to-many types of communication, where users “blast” messages out to their friends. This was way cool for awhile, and probably still is for anyone who’s just discovering it. But the one-to-many type of communication just doesn’t scale for most people. For most people, the bigger their network gets, the less relevant, and therefore meaningful, it becomes.
Talking to just one person, the conversation is tailored to what you two share and how you connect. Expand that to two people, and it becomes less so. For the users on Myspace or Facebook with more than 20 friends (which is probably most active users), I’m not sure what truly memorable, personal message they could possibly blast out to all of their friends. That includes how they express themselves in their profiles, what they write in their MySpace blogs, and what pictures they share. Even comments left on their friends’ pages are public, one-to-many types of communication. My guess is the vast majority of these types of communication are only meaningful or memorable to a small percentage of their friends, or none at all.

I’ll take a step back and admit that this is not even remotely scientific. But then I’ll BLAST AHEAD and proclaim that I think this holds true for every network out there. Online social networks that don’t have some ability to form small, ad-hoc groups will all eventually become irrelevant and meaningless. I think the only caveat is in crowdsourcing-type situations where having a large network actually works in your favor, like when looking for a job or the answer to a specific question. In these cases, the more people in your network, the more likely your message is to be relevant to someone. But even the communcation bourne in those types of situations is not reflective of a strong bond between users.
Having a large network affects both the messages that users choose to express, as well as how those messages will be received. There are a couple reasons for this:
Constraints
Communication constraints arise when your network gets so big that it begins to include “mixed company” - that is, what was once a place for you and your work friends, now includes old friends from high school, a couple people you briefly dated, some concert promoters, Barack Obama, and your mom. This obviously constrains the extent to which you can use this social network as way to communicate, as I wrote about in When Worlds Collide. This is the ultimate burden of success for networks like MySpace and Facebook that have gotten so popular. Of course they’d like everyone in the world to join, but that means altering the social environment of users who are already there.
Room for Error
Second, with fewer people in the audience there’s less room for misunderstanding because you’re more aware of how your words will be interpreted and more easily able to compensate for this. Based on close communication and shared experiences, people begin to develop a kind of shorthand and a set of inside jokes, that would be foreign to outsiders. It’s for this reason that, as your network gets larger, you actually stop sending out messages that you once would have – because you’re aware of the people who might receive it and interpret it the wrong way.
So what do users do when their online social networks get complicated, boring or both? They go back to doing what they always do - use email.
There seems to be a disconnect with how online social networks currently work, and how private and unpopular we really are. These sites want us to keep adding more and more contacts until our network is bursting at the seams. But when it comes to forming lasting relationships, more is not better. We just don’t have the time, energy or inclination to have that many close relationships. It’s for this reason that I have no trouble saying Facebook will eventually die. There is an inital charm to these sites that is created almost solely on their novelty. The key to the killer social network will be one that mirrors real life; facilitating the growth of fewer strong bonds, not encouraging the accumulation of several weak ones.
*If I’m wrong about Facebook, I owe you all a cookie. That’s one (1) cookie. You’ll have to share it.
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Josh’s post contained Ben Schneiderman’s Circles of Relationships, which illustrates a way to think about the groups of people in our network, relative to ourselves.
The first time I saw the “Live Community” module on my 
Ok I’ll admit it, I have been completely addicted to 
In addition to personalization, this module has a lot of cool functionality, including being able to mouseover each photo and access community, travel guide and weather content, without ever having to click a button. Users can also get to theme-based destination recommendations by using the “Show Me” dropdown, which updates the destinations in the module. My favorite category is the “Near Me” category, which shows great ideas for weekend trips and has a neat side-effect: if you change your location to somewhere that you plan on going but isn’t actually your home, you will get cities nearby to that location. So, if I’m planning a trip to France and want to explore cities around Paris, I could use this module to get some great ideas.
Yelp is quickly becoming the go-to place for online reviews. But the bigger it becomes, the harder it is to use. Here are three reviews that I recently had to compare. In browse-mode, I’m skimming a couple keywords and glancing at the star ratings. Then I start to get confused and wonder why one person hated it and the other loved it. Who are these people and why should I trust them? Does knowing how many reviews they’ve written make me trust them? Not really. Users who’ve written over 200 reviews are long-time Yelp users, and perhaps restaurant afficiandos who really like sharing their opinions - but, if I wanted an expert review, I’d be using a different site. What really matters is finding the opinions of people with similar tastes, similar interests…people who are most like me.
