For Personal Tasks
Red Butler – Virtual concierge with tons of extra perks
Rent A Smile – Personal outsourcing for at $2-3 per task
TimeSvr – $69/month for unlimited quick tasks
Fancy Hands – US-based assistance starting at $25 a month

For Small Business
Any of the above, plus:
oDesk – One-stop shopping for any job imaginable (Worldwide)
Rent A Smile – A la carte dedicated assistance from $5.75/hr (India)
Hire Your Virtual Assistant – Great plans for entrepreneurs (Philippines)
Team Launcher – Qualified help, FAST (India, Philippines)
UAssist.me – Professional outsourcing close to home (El Salvador)

For Medium Business
Longer Days – 100% American business process outsourcing (S. Carolina)
BPOVIA – A popular choice among growing companies (China)
Brickwork India – One of the most famous VA companies (India)
My Business Assistant – Unique dual-location company provides flexible solutions (Maryland / India)

For Full-Time Dedicated Help
Virtual Staff Finder – $350 to start, $400-750 per month ongoing
VirtualEmployee.com – $895 – $1495 per month
Rent A Smile – $920 per month
A to Z Tasks – $995 per month
123Employee – $997 per month
24/7 Virtual Assistant – $999 per month
Team Launcher – from $999 per month
Hire Your Virtual Assistant – $1120 per month
UAssist.me – $1300 per month

For One-Time Projects
Elance – Access thousands of freelancers with just a few clicks
oDesk – Have qualified workers bid on your tasks
Fiverr – You’ll be surprised what you can get done for just $5
Mechanical Turk – Outsource small jobs to the cloud for pennies