So, you wanted to see  Twitter co-founder Jack Dorsey at the C100 event and the tickets sold out too quickly.

Good news – we happen to have a few extra. And we want to give them to you. For free.

Over the next two weeks we’ll be running some fun contests – on Twitter – that could land you a seat in Jack’s talk.

Here’s how you can win:

    1. Tweet us: we’ll be asking four #TellJack questions. Answer back using the hashtag and be entered to win a ticket.
    2. Attend Communitech 101: we’ll be #JackSpotting all night long. Some of our staff will have pictures of Jack Dorsey. Take your picture with our staff and the picture. Tweet it with the hashtag #JackSpotting and be entered to win. The best part? The more you visit our staff, and the more you take and tweet pics, the more chances you have to win.
    3. Register for Techtoberfest: sign up for the best startup celebration of the year and tweet that you’re going. Register by Sept 17 and you’ll be automatically entered to win a ticket.

Follow us on twitter @communitech for these chances to join us and Jack Dorsey on Sept 19.