Yes. The most useful social media buttons are the ones that are going to be used by your readers so that your legal marketing content can be shared with others who may be interested in reading it, and ideally contacting you about a potential case.
Accordingly, the most popular social media sites are also the most useful social media buttons that should appear prominently on your website. Currently, those sites include Facebook and Twitter. Other sites, such as LinkedIn, may be useful if you want your readers to share your content with colleagues or others in the same field. Additionally, sites like StumbleUpon may be useful if your content would be of interest to many people, and sites like Google+ may be important for search engine results.
Choosing the right social media buttons to achieve your law firm marketing goals is likely to be an ongoing process as you see what works and as the ever changing field of social media continues to evolve.
For more information about how to effectively use social media as part of your attorney marketing strategy, please browse our library of articles and other website resources.