I'm not a Twitter fan, but maybe some day. I do a LOT on FB and believe that is the best venue out there. I would first of all mirror the advice from Felix, though. You can NOT continually throw out all your real estate stuff at them. They will all UNfriend you pretty quick. There has to be a mix. Yes, they need to see that you are doing real estate, and more importantly that you are doing well and have a lot of knowedge. But they also need to keep seeing you share photos of your deer hunting trip and hear about your latest escapade at the car dealership.
I REALLY like what Felix said about humor. People need variety, but homor is contageous. Do they want to go on there and keep hearing the updates from Joe and Stephanie and mom telling them that they just went to the doctor for the 18th time and can't figure out what is wrong with xxx? No. Do they want to laugh? Yes. They want brief entertainment and informative clips. So variety is the key.
My profile shows that I love real estate. But is also shows tha I love other things. Yes, when I make a price adjustment I go to my website, click the FB linke and post it to my profile. I regularly post updates about the market or most recently, the fact tha ERM can now do loans down to 500 credit scores! This now has people emailing me asking questions about it.
But the reason they are still looking at y profile and actually reading it is because yesterday I may have posted a funny video or cross-linked an article or post or video from another friend and commented. It also helps to pay attention and take the time to wish people Happy Birthday! The variety is very important.
Oh, and this should go without saying: keep it clean!! I have had a few "suggestive" posts tha appeared and an aquaintance or two that would post vulgar things. I am not into that and don't want it on my wall. So you may have to kick some people off your friends list if that happens.
I can tell you that last year I had two transactions that started only because of FB. I already have two things I am working on now that were leads from FB. I also have a handful of others that have not transpired yet, but I did a CMA for them and one day we will work together and sell their home.
It is the best way I feel (Facebook) to interact with your friends and their friends. I know a lot more but can't tell you everything.
Gotta participate in the community and share your humor, personality, and personal side. Too many agents on Twitter pump 100% business SPAM to their Twitter followers. When this happens, your followers will stop reading any of your tweets. This is the same with Facebook or any other social media outlet. Best of luck!
You can join Squidoo if you like...(not too many agents). It's an advanced blog type site.