Adblock plugin

Hey guys,

I have started to use WordPress for my blog and while I don’t expect to be the next ‘big thing’ I was hoping that for the few readers who do visit my site, the introduction of some form of advertising would help pay for the upkeep of my site.

I was wondering if there is a plugin that allows users to contain to use adblock, but gives them a polite little notice requesting that they disable it because I need the revenue to pay for the site itself.

Nothing intrusive, just a nice polite notice requesting they disable it for this site.