You are right to feel this way. Potrero has been released rather in stealth mode while its developers are ironing out the bugs, however,
the website you're talking about is up and running, check it out at https://potrerocoin.org
Potrero is not yet on Discord but community support is being provided on the following Freenet IRC channels: #potrero, #potrero-mining, #potrero-dev. Feel free to drop by https://webchat.freenode.net
Your feedback, as long as it's constructive and not trolling, is important to developing the Potrero network.
Follow @PotreroCoin on Twitter for upcoming announcements.