Marketo Mondays Episode 2 - Custom product scoring and flame icons in Salesforce - YouTube
In this episode I'll look at how to score an individual product and create custom flame icons similar Marketo Sales Insights.
Individual product scoring is not an easy thing to do so only do it if your company is really demanding it.
This is the Formula code I used: Sanford Whiteman Feel free to rewrite correctly 
IF(
Campaign_Lead_Score__c <= 0,
IMAGE("/servlet/servlet.FileDownload?file=0150N000006U1a5", "0"),
IF(
Campaign_Lead_Score__c <= 30,
IMAGE("/servlet/servlet.FileDownload?file=0150N000006U21V", "1"),
IF(
Campaign_Lead_Score__c <= 60,
IMAGE("/servlet/servlet.FileDownload?file=0150N000006U224", "2") ,
IF(
Campaign_Lead_Score__c >= 61,
IMAGE("/servlet/servlet.FileDownload?file=0150N000006U229", "3") ,
NULL
)
)
)
)
.png)