I never imagined that this would suddenly become the new trend here on Warrior Forum but it makes sense I guess.
It's a great way to create income, but here is my TOP thing to look out for..
MANAGE THE CLIENTS EXPECTATIONS
People who aren't exposed to Internet Marketing a lot will think it's some kind of magic bullet to getting clients.
If you are offering SEO Services for example, many business owners may expect to on the front page of Google, even if you've pre-warned them that this process can take time.
Here's a full article we wrote (it's a bit much to paste all in here)...
Unrealistic expectations of SEO | Web Marketing