I saw some study results earlier this year that showed the average Twitter user was older than the average Facebook user. That could explain some of what you're seeing.

I use Facebook mainly to keep in contact with family and friends. Twitter for professional contacts, but that does not keep me from tweeting personal stuff. After all, many of those professional contacts are also friends.

>Twitter and Facebook are known are Internet giants since a while now. What they have accomplished is something. For a while, I only had a Facebook account. Recently, I created an account for the Universal Thread on Twitter.
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>What I found is that the Twitter interface is really simple to use and we do not have all the non necessary stuff that Facebook has. However, we cannot ignore both. For a point of presence for a Web site, it is important to be on both sites. Facebook has the Fan page support which allows us to present our site. Twitter does it at the account level and I think it is good. This is one thing that makes it simpler. They also focus on 140 characters per post and that it probably their most important option.
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>Within about two hours, when I set up the account on Twitter, I was able to have it completed and ready to use. Then, the following and followers options came pretty easily. What I have found between both sites is that Facebook is much more social in the sense that it targets the individuals with all kind of gadgets, which I do not use BTW, such as playing games and so on. Twitter has surprised me a lot when I rapidly found that pretty much all of our members were there but only about 1/4 on Facebook. So, it seems professionals are more to adopt Twitter instead of Facebook for their social site, as for those who would prefer one over the other. I made a lot of searches on Facebook to find Universal Thread members. I only found a few. But, in a mather of just a few hours, I was able to find pretty much all the regulars here on Twitter.
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>Is this pretty much your opinion as well?