Are you refering to " ", which keeps showing up on the forum?
If so it's part of HTML (hyper text markup language) used to build websites, and makes a space.
Why it doesnt appear as a space on here you'll have to ask Roy cos I don't know!
Alternatively NBSP in certain quarters can mean No Bulls*** Please!!
yup - cazzer is right, unfortunately the  's keep showing up in the old posts that where transferred over from the old accringtonweb forum software.. just ignore them, one day they may go away....