Beer has a point in the 2-3 weeks thing. I've taken 2 Marketing classes, and you want to keep consumers interests high. 2-3 weeks after their first look into a product is generally when they start forgetting about it.
I went over a unit a while back on social network marketing, and Cono has to take advantage of their followers. 18000 followers/fans is AMAZING (btw, did Twitter transfer followers from account #1 to #2?), but Cono needs to keep them updated. People don't like their following list on Twitter to be clogged up with people who don't tweet often. Cono should upload some sort of picture every once in a while, get feedback in the form of questions that spark interest (i.e. tweeting "What cone flavor do you anticipate the most? Tweet back!"). People will tweet back with something like "@conoitaliano2 Breakfast cones!" and will get their own followers interested too.
If Cono ever does open an online shop, or even in brick and mortar retailers, they could offer some sort of 5-10% consumer coupon. That would for sure get people to like and follow Cono, and expose more people to the cone.
Just a few thoughts.
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