There's lots of advice out there explaining how to use Twitter to help your law practice (this one is typical), but here's a post from The Week, "Why I Hate Twitter," that suggests that you might be too late:
Twitter has become like high school, where the mean kids say something hurtful to boost their self-esteem and to see if others will laugh and join in. Aside from trolling for victims after some tragedy, Twitter isn't used for reporting much anymore. But it is used for snark.