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pshhh mate im not looking for 'friends' here tbh i'm just trying to do something decent for charity. They don't know me, so perhaps they should be more careful before slagging of strangers?

All due respect man, but I think that's what you fail to see here. It IS a community of friends on here, so regardless of whether you have good intentions or not, you've approached these people in a relatively aggressive manner and they retaliated as such. "They" should be careful? Why? Do you have something nefarious in mind? If anything, It's you who should be patient and careful, as you're got far more to lose here. Look at it this way, you're trying to sell lock holsters, to a community of cyclists....who are most likely to use them!! Do you not think they'll be critical/scathing?