Is it possible to search /sort /filter the transaction history somehow?

For example show all transactions sent to [USER]

Not really, no. I think you can see all the transactions for a certain item, but only for current year, and that's about it. It would be a really nice feature to have, at least for staff members handling various scam reports and such.

I actually did some research way back and found this suggestion thread that didn't get a lot of attention:
http://forum.toribash.com/showthread...d.php?t=522609
So you could probably bump it if you have extra suggestions to add to that.