Absolutely.  Once say you will file a case, the employer will likely check your company email and internet surfing, and your personal Facebook, MySpace, LinkedIn, Twitter, blogs, and any other online accounts you have.  The employer will try to use information learned from these accounts against you in your case.  In addition, you will want an attorney who is well-versed in technology to represent you because most cases involve employer email and other employer technology issues which your attorney must generally specifically request to receive.  This information is often vital to proving your case.