Although I can see it from both sides It shouldn't really be a problem a new poster asking for a ticket. I can see why big posters and those that contribute have a problem but in reality if it was one of them putting a ticket for sale they would always sort out someone they know then a regular on here. If no one is going to buy it are they going to sell it to a first time poster or cut their losses? Easy answer isn't. Do people really get offended? why not just ignore the post? OK people are not wanting to sell to a possible tout, in most cases any tout trying to get a ticket will be for games where tickets are in demand and its quite likely that you'll know someone that needs one anyway.
I'm not a regular on here, I make a few posts, I've sold spares, bought spares(including off Carl), and both arranged and offered lifts. I use the site for Information, help myself out and occasional mild amusement.