On the other hand, putting one's phone number into that site, or any other utterly anonymous random site (what the F is "newseachday.com" ?) on a whim, is a mistake.
Why is it a mistake? Of what value is a valid phone number absent any other contextual information? Given a day or two, I could write a script to generate and submit all valid phone numbers in the world. Would everyone be doomed by my having entered their numbers?
I've got several different phone numbers, and they each receive different amounts and types of spam. You'd think given the limited size of the phone number space, that spammers would just dial numbers indiscriminately. However, it appears that they still operate using lists of more-likely victims. By entering my phone number in random forms, I'd worry that it could be used as another indication of a good number to call to bother real humans. Of course that's in addition to the obvious doxing of my online nym if done from the wrong browser VM.
So? What reason would I have to trust it? Seriously.
I expect you mean well, but the "news" on that site is just an aggregator, like millions of sites with no-so-good intentions. This isn't a good "trust-me" look.