David Huerta is a co-organizer for of CryptoParty NYC, a non-organization of teach-in workshops which bring privacy-enhancing technology skills to New Yorkers. In 2009, he created Hayst.ac, a browser plugin which obfuscated Google search histories to make them harder to accurately data-mine. He also created an open-hardware "mixtape" in 2013 which contained an soundtrack that was encrypted, then mailed to the NSA without the key needed to decrypt it.
Hosting your own blog is an excellent first step in declaring independence from Google/Twitter/etc but still leaves some dangers in the lack of anonymity inherent to IP addresses and DNS names. Using Tor onion services, you can say stuff on the internet without randos creeping on your personal info and join the Tor ~DARKNET~. Stop by to learn how!