First of all you may think if it’s a good idea.
I’d take the risk. I’d use Twitterfall because it allows a good combination of lists, searches, geolocation and exclusions. It also lets you decide speed and size of the falling tweets.
Need a previous moderation? You can also use TweetChat, a service with log-in authentication which allows to block spammers and undesired messages.
- Monitter – a real time Twitter search tool that enables you to monitor a set of keywords on Twitter.
- Gigatweet – displays the number of tweets since inception of Twitter and offers data by keyword.