In Google 3 most important things are :
HISTORY , HISTORY , HISTORY.. Yes !!

THINGS TO REMEMBER WHEN DOING SLO :
Sponsored Link Optimization : “SLO”
“SLO” Gets The Best Deal ,,VS.,, “PPC” Gets The Average To Low Deal

1. Google Success is time dependent it does not happen over night so “SLO” is a 90 day Program.
2. First Month is your worst month because of the “lack of history” for the new account we started.
3. First 10 days are crucial because of “SURGE” implementation of SLO and requires 2 to 3 X more spending.
4. A 60 day upfront will insure the best results by implementing the 10 day SURGE and then back to normal
5. As time passes results will get better till 180 days the account will be fully optimized
6. SLO gets the best deal possible according to your overall