Ex-Streetlifer
I've joined from Streetlife, unfortunately so far I am the only one in Brixham. Joining was made difficult by mylocalforum listing Torbay as a county (it is a Unitary Authority) when Brixham should be listed within the county of Devon. (mylocalforum was very quick to respond to my query about Brixham's location).
I do prefer the Streetlife and Nextdoor interface which I found simpler and easier to use, in comparison I find mylocalforum a bit clunky and less intuitive. Having said that all software has some learning curve and I shall persevere.
If Nextdoor addressed the privacy issue (what were they thinking?!) I would give them a try, however my other reservation is that I do not think that their localities are geographically big enough to sustain an online base.
Loads of ex-Streetlifers posting on Nextdoor's and Streetlife's Facebook pages.
https://www.facebook.com/streetlife.uk/
https://www.facebook.com/nextdoor/