A lofty and valid question; one for the socio economists I suspect.
I personally don't think I'd get very far asking such a request without at least some minor benefit for the other participant. Perhaps that's where I'm going wrong though and I need to cheer up.
1) mAsHtOn
2) dubkev
3) Jakub96
4) d0cA
5) Polka_Dot
6) DoubtfulAce
7) Oliver
8) psg1ben
999kg) hippy
10) ChainBreaker
10.5) BenJam
đ) Photoben
đłïžââ§ïž) Dee
13) DethBeard
og14) Lazysuperhero
14) OLC
15) Carbosarus
16) Johnnettles2
17) Nik.Cydia
18) duncs
...
68) almac68 - in spirit cos Iâll be in Italy
69) Jonny69
419) Señor_Bear
531) rhb
???) ltc
1) snottyotter
101)EasAndy
667)Festerban
23) EB and *m.f if I can convince him
13) Ramsaye
25) middleofnowhere
#2) skydancer
666) monkdagola