I've been using Facebook a lot lately as a central social networking location to spread the word about numeroom.com and otherwise share news and get information about my friends and contacts. I am a pretty fast typist and tend to have a lot to say on most things, as a result I've run into a Facebook chat block message in the past. When it occurred I had been chatting with a friend for just about 2 hours and I made note of the warning (see big red "1" in image) , minutes later I could not respond at all and received an ominous pink boxed message (see big red "2" in image) stating I was blocked temporarily and warning me of abuse. Since that time I had little use of the FB chat feature and several months passed, until today, I was chatting with a friend this time for about an hour when I started gettting the yellow warning messages , after about 30 minutes of trying to "slow down" as suggested by the warning I finally got the big pink box and was blocked from chat. I just wanted to show what the yellow warning and pink box look to those who haven't encountered it.
One thing that I noticed is that it appears the block limit has been reduced as I started getting messages far sooner than I did the first time and I wasn't typing any faster than normal. My guess is the incredibly fast rise in users on Facebook is starting to tax their bandwidth allotments so that they reduced the interval of chat before blocks are invoked. It is annoying but since I rarely use FB chat not so bad, besides after getting the block I had an easy solution. I simply sent an email message to the person I was chatting with in FB and provided a public link to my numeroom so we could chat there. ;) I have no chat blocks on my service (but I must admit it would be a nice problem to have)