Interesting idea with the overlay. Syncs up really well imho !
And by the way, welcome (back) to the forum. You're not the only one who loves Coldplay's early sound best :) Check out the Oldplaying thread that I made a couple of years ago to celebrate early Coldplay:
Also, have you heard Vitamins yet ? This song is from the Safety EP recordings. The AHFOD movie gave us a snippet:
1. They exist because peeps like me (a completetionist) have the means to record them via a TV or the internet or however else they came. Some of them even like to share or trade their recordings if it's a recording not many people have.
2. Very uncommon in the bootleg world if there is enough demand for it. Though obscure recordings (mostly audience recordings) are rarer because there isn't a demand for it or the person isn't releasing it and waiting for a trade. Basically, once a bootleg is shared, it is bound to be spread around becoming less rare.
3. Some won't share them due to them not knowing how to share it or they are waiting for a trade. I think it would be safe to assume that the person running the CPBootlegs site didn't gather all those recordings themselves, but rather got them while they were still available in the past. They're are the only with some of that stuff that we are aware of but there's probably more out there that have it that aren't on the forums are stopped being so serious about Coldplay.
4. Usually so they can get more trades.
Hope this helps!