Thanks for the invitation to comment on the Journalism Accelerator blog; I think you've compiled a good overview here of social monitoring tools.

Among those you mention, I use Tweetdeck when managing Twitter activity for two Northern California newspapers. It helps me track staff reporters' tweets and designated hashtag activity, alerts me to mentions and allows me to post updates as one or both of the newspapers.

I also have some search terms designated via Google Alerts.

I look forward to experimenting with some of these other tools that you've detailed here. I think this overview will be of value to people in a variety of industries who wish to monitor social media more effectively.