Hi, this is my first post on here. I am looking for a bit of advice for the website londinium.com which I have been developing using leaflet js and overpass api data.
I have written about the way I have been extracting the data on my blog, https://allotmentandy.github.io/blog/2022-01-04-Importing-OSM-Overpass-API-Data-To-MYSQL and it has generated a number of questions on which I wanted to ask for advice and your opinion about the data in the aoverpass api / osm.
website urls
I wrote a post back in May about dodgy data in the website field https://allotmentandy.github.io/blog/2021-05-16-Openstreetmap-contd/
Many websites are listed without the [ https://] part
Is there a standard for these, or any error checking?
https://www.openstreetmap.org/node/7899265930 this one eg has a phone number in the website field
twitter field
What is the correct way to store a twitter link? There is a mix of the following (ps. this is my twitter account, if you want to chat there or follow me 
https://twitter.com/andylondon
@andylondon
andylondon
I dont mind fixing these online, if there is a standard, just I am not sure what that standard is. The main problem is the websites missing the http(s) part, or should i just fix that on my side?
Kind regards
Andy