Most likely just a difference of opinion on what constitutes "spam"...

I'm not a DT member like Vod, so I'm sure I don't get anywhere near the levels of unsolicited PMs that he does, which means that for me, if someone sends more than one when attempting to engage in a discussion on forum related business, then I'd be inclined to call it spam... or if it is obviously "spam" like trying to sell me something or promote a website or service etc. For Vod, perhaps his threshold is ANY unsolicited PM == spam?

I still stand by my comment that the reason for your negative trust is quite clearly explained in the comment... it was "Begging for merit in unsolicited PM".