I also bet that half of them have opted out of receiving your FB updates because you spam their Facebook lifestream with Twitter updates.
You have different audiences on your social networks - and your normal friends are not on the 15 different social networks that you are on! Play it safe and only post things on the social networking platform that fits that audience.
Sure sometimes you come across a great article or funny video that you want to share with everyone; it is probably suitable across all your audiences too. But once start using characters that are unfamiliar with non-Twitter folk, you become irrelevant to that viewer.
I am not a big advocate for posting the same msg I do on Twitter to go to my FB account. Half the time, I'm taking the time to find the @username that is associated to the artist or author to give kudos to the individual OR I'm using a #hashtag term to add my post category/conversation.
To me, that is a smart way to use Twitter - You engage more in conversation with individuals at such a small level (140 characters or less) that your followers can scan what you are saying and choose to engage or choose to ignore. Within 10 seconds, your posts will have dropped below the screen and out of their view.
This has been posted on twitter a few times over the past week (or at least this data flow concept). give credit to Louis Gray for this slide deck:
Fortunatley for me, I don't have too many friends that spam my Facebook lifestream with twitter feeds. I haven't blocked their posts out of respect :) But I'm not everyone, and I'm sure others may hide you eventually!
You MUST be aware of your audience within your social networks. If not, your message is diluted and ignored. Take advantage of your other networks by sharing or pitching information to them in a slightly different way.
Do you agree or disagree?