right now only 5, but often many more. Especially when I'm working on the game database.

8 tabs right now.

one

1 because I am using Wii opera.

Normally I will do what everyone else does and open interesting threads in new tabs, I usually do 3-4 at a time [meaning 4-5 tabs] but I sometimesopen more, or maybe have another tab kept for using the charts/tables

5 Tabs open at the moment.

One window

At least 2 tabs at any given time (the front page + whatever I'm looking at)

Usually 4-6 (7 right now because I just opened several threads I'm about to look at, this is the first one)

Up to 12 or more if I see a lot of interesting topics and don't want to forget to look at any of them and also am juggling ongoing threads.

only one, sometimes two, but no more than that...
(my computer is old, I don't want to overcharge it... :P

I open most of the topics I posted in before I logged off, just to see who has called me a moron since last time...
No, just kdding, I do open several tabs though, as I usually post in most threads I read fully through.
At the most it could be a dozen, usually around 5-6.

One right now, but some times up to like 4-5 when I see some interesting threads at once.

Usually I have 2-4 open at any given time.