I suppose trying to see if they have a Neocities profile? By pointing your browser to go to https://neocities.org/site/(insert name here), if they have Neocities it should either send you to their profile, or if they don't have one I believe it redirects you to their site.
I suppose trying to see if they have a Neocities profile? By pointing your browser to go to https://neocities.org/site/(insert name here), if they have Neocities it should either send you to their profile, or if they don't have one I believe it redirects you to their site.