Galen: be careful. Take a gander at this sticky concerning political pot-shots in GQ. Remember: factual answers only; steer clear of political opinions.
And then take a look at the repercussions of ignoring the sticky.
Manhattan is one mean twinkie that don’t fool around.
You might also happen to have used some service where your IP/fqdn will be stored and searchable.
Some ftp sites e.g. will have their usage statistics/transfer logs online, sometimes this will include IPs - mostly for the top users( try a google search for “ftp statistics for”).
Another example could be mailinglist archives, if the headers are stored/shown, this could enable me to find some of your interrests/communications.
As a side note, dynamic addresses are often not very dynamic. My DSL provider uses long DHCP leases and will give me the same address for a month or two. They’ll even reissue it to me if I have to re-connect. Dynamic in this case just means “won’t guarantee it will the stay the same”.
TMP, you might enjoy this web site:
http://www.visualware.com/visualroute/
It shows a world map of your connection & other things & they have a free page where you can try it out.