To cycle against entity resolution tools for a regular company, that'd mean things like full simultaneous reset of:
* cookies
* browser user agent
* potentially sequence of sites/services you use
* IP address/location
* linked accounts
* contact info
Even one miss/overlap can void your efforts.
The big sites have much more to work with than that, making it especially hard. Likewise, if a team takes a specific interest, there are even more correlations that can be done, e.g., behavioral analytics.
Social media sites (Facebook products) might drive ads based on fingerprinting but they aren't re-linking social graphs this way. Sticking with the reliability of shared phone numbers and emails (and people friending/inviting the same people and having the same name theyve seen before)
That would be especially useful for censorship services across competitors: Although Google Facebook and Twitter compete, sharing the flagged accounts would allow recognizing the same user coming back with a different email address.
but sure? probably if you just alternate between a backup email tied to an email you use everywhere
a lot of people dont know how or why they get the same suggestions of people and dont want that.
But remember to break your social graph on occasion with a new phone number and email address, and never sharing your number or stored contacts with the social media network. not that hard just something to be conscious of.