Sorry about the off topic but here is something that I noticed. Some users will add you in their list and then they will PM you saying something like, I have added you to my TrustList .... .... ....
It's like they are asking indirectly to give them the favor (may be the wrong word) back. And I see this works very well too unfortunately.
How many of you have experienced this?
I think this is a rare thing to happen, just like I barely get any PMs asking for Merit.