I agree with the OP. 2-3 keywords isn't enough.
I have bought a few services and what I have been doing lately is targeting my most important keyword and new targeted keyword for the other. I always try to target the raw url too.
There are a few services here that you can have unlimited keywords, such as wiki and blog comments, but have to be in spinax format. These particular services are great for balancing out your anchor text and even better for link diversity. I use these services for generic keywords {click here|more info here|go there|try this} etc.
I have bought a few services and what I have been doing lately is targeting my most important keyword and new targeted keyword for the other. I always try to target the raw url too.
There are a few services here that you can have unlimited keywords, such as wiki and blog comments, but have to be in spinax format. These particular services are great for balancing out your anchor text and even better for link diversity. I use these services for generic keywords {click here|more info here|go there|try this} etc.