Can anyone explain it to me?

[omytang]

Spammer.


Moderator.

[Vaucluse]

The ip is what will get you banned from posting under other nics and the OP is your rather primitive advertising.

[SunWuKong]

Well that was about as helpful as pissing on compost, I mean it helps, but it takes a bloody long time to sink in.

OP => Original Poster
IP => Internet Protocol Address

Logging IP addresses is a way for forum administration to keep track of banned members. It is basically your address on the internet. Note that you can request an IP change from your ISP (Singtel, Starhub, M1, etc).