I have had to block over the last 5 years over a dozen or so people - ranging from just annoying people that wont accept I don't want to be n/fs with them to harrassment nmails.
I regularly go through them and delete those that are frozen.
At the moment, I have 7 on my block list.
1. Only a 6 month account, hasn't been online for 2 months. I think this was someone's side account that I blocked when they kept harassing me on their main, which I also blocked. Harassment that TNT obviously thought didn't deserve a freezing.
2. A 15th month account, still active - I had gotten into a heated debate on the boards with this person, he decided to keep it going in nmails.
3. #2's side account - you got to love their persistance.
4. A 6 month account, hasn't been online for almost 2 months. I can't remember the reason for this blocking.
5. A 16 month account, still active - this was a
weird one! She nmailed me in a different language but I got the gist of it - she wanted to buy a PB out of my gallery. I said I didn't speak any other language and it was hard for me to understand her. If she was asking after the PB, then it wasn't for sale because it was in my gallery.
The nmails kept coming, half the words in english, half in her own language - she was angry that I was 'hoarding' PB's and I should sell her one. After about 4 nmails, I had to block her.
5. A pre-emptive block! I know it was a bit paranoid but during the LD Plot, he was being a real jerk on the boards, and I whenever I was on the boards and he was causing trouble I would try and stop it. I didn't want any nasty nmails. He causes trouble on the plot boards whenever there is a new plot - he is from another board and likes to stir things up.
6. A 6 month account, hasn't been on line for 2. This was a monthly tournament player (can't remember which game), who would send me a nmail
telling me it was my move but she herself refused to play the game when we were both on line. Very annoying! I blocked her to save the aggravation.
Most blocks come from the neoboards ( I like being on them, so don't suggest I leave them
), and from playing the monthly tournaments.
I actually respond to a lot of my 'critical' nmails and show them the error of their ways and only block if they turn nasty.