Danasoft - Free Signs For Your Blog
How scared should you be - did I just hack your computer?? Highlight from here, ==>Advice from the makers of the sign: These signs are created and served by our webserver in real-time for each person that views them. Your IP address and other information are only visible to YOU, not to others, but because people see their own IP address and computer information displayed on a blog, they think that their information can be seen by everyone! Get back to work!!<== to here, and find out.
See Geolocation: Where Are My Readers Located? for more advice. Better, spend your time publishing informative and interesting content - make your readers feel genuinely welcome.