Twitter! It is so fast & great for my niche (bargain blogging) when deals pop up faster than I can post.
I wish I could figure out how to use Stumble effectively. I have no idea how to check to see if I have ever even been stumbled, but have a link on my site so if you'd like, feel free to stumble me & explain how I can view it. lol.
For me, it is RedEdit when I remember to use it. The one I have the most difficultly with is Propeller. I can't log into my account - I have two now and neither is working. I use the others listed above but not Plurk - I hadn't heard of it until recently.,
I'd have to say Twitter.. And only Twitter for me.. Other than that, I hardly see any hits from other booklmarking/networking sites:-(
By the way, if you wanna follow me on twitter am http://twitter.com/themomwrites. I'll follow you back:-) And if you want to check out my blog. It is The Mom Writes.
Am really happy, though, to have found some great advice and tips here!
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Toxic Free Blog - by Brittany Glynn
Brittany is a director of the Toxic Free Foundation and created the first ever Toxic Free Certification Program. Weekly, Brittany publishes the Toxic Free Blog and provides coaching to over 10,000 families in the United States alone. She is the author of a Toxic Free educational series and co-author of several Toxic Free learning programs. Brittany is also an award winning author.