The 120,000 plus people expected to attend this year's Dreamforce event, albeit a percentage online rather than in person, will pack San Francisco's Moscone Center in a manner rivaling or perhaps surpassing Oracle's OpenWorld event. Some 90,000 people registered last year. While Salesforce.com helps boost its numbers through strategies such as free keynote and expo passes, it's hard to deny how much interest there is in the vendor.