i have never been advised before by anyone that contributing to the forums would make me more trustworthy, and beside who says that makes me more trustworthy than anyone else just because i exchanged a few messages with some other users
Then you haven't been here long, I'm not sure many ppl who ran scams on here, spent the time posting in the other forums, hense now a lot off ppl won't deal with classified's only posters.
Stop taking it personnaly though, this is the same for all of the classified only posters, if you read the main forum posting regularly, you'd actually know this.
Especially if you read the rules:
The classified forum is free for all private sales. It’s there primarily to provide and opportunity for you to sell those unwanted bits and pieces that you have no need for that someone else may well be desperate to get hold of…
The ‘spirit’ of our forum is one where users can turn their old, surplus or unwanted kit into extra cash to enable them to buy new bits to help them get out and continue riding. The Classified Forum is not a place where users can trade parts bought elsewhere and then sold at a profit.
Everyone on here who has mentioned this, is not making a dig at you, this is the "friendly advice", their trying to say post some other things and you'd maybe taken more seriously.
By only being a classified poster, how are you taking part in the 'spirit' of the forum? If you aren't willing to do that, then ebay is the way ahead.