I have looked into hiring a virtual assistant. I will likely do so in lieu of hiring an administrative assistant/legal secretary. Depending on your practice, a virtual assistant could be a great solution for a solo attorney spending too much time on administrative matters but lacking the resources and/or space for a physically present administrative assistant/legal secretary. A virtual assistant can do just about anything that does not require physical presence, e.g., answering phones, communicating with clients, preparing electronic documents for mailing.
The two biggest drawbacks I foresee are an inability to print and deliver hard copy documents to me and to scan documents I receive at my office. I am attempting to retain as many of my files as possible in digital format, so it is frequently necessary for me to scan and shred. I would love to be able to farm this out to an assistant, but mailing documents to be scanned seems tedious.
Former paralegal Dortha Hise (www.dorthahise.com) offers virtual assistant services through her company on an independent contractor basis.