It can be overwhelming at times. I'm pretty small right now. So, it's not too bad. I just schedule time for my social networks. I try to follow up a few times in a week. I answer emails, connect with friends, confirm friend requests, follow new bloggers, and work on my blog..etc. I can understand the concerns of a much bigger firm. I think that they'd definitely have to have bloggers manning their social networks daily.
How much time a day does all your social networking take Kimberly? Oh, and what is the name of your blog? Leave the link so I can check it out!
4 that I use regularly counting the one I operate at http://www.christ4responders.org. One thing that helps is the use of a "social media dashboard." I use Hootsuite (there are others.) That program allows me to monitor and post to Facebook, Twitter, and Linkedin simultaneously. Of course I just joined ViralNetworkers today so I guess I should say 5.