One of our clients asked the following in our local MUG discussion area:
"Currently, [we have] a Marketo database of about 500,000 B2B leads, but later this year we're launching B2C products. We currently have a B2C user base of about 5 million to whom we don't marketing directly. That's changing, and I'd love to chat with a few people that have experienced what Marketo is like for a database that size. Right now, our instance is excruciatingly slow at times. I see that spinning circle A LOT these days. I'm just wondering if it's feasible to use Marketo for a database that could some day grow to 10s of millions of leads."
Wanted to air it to a larger audience to get additional input...