i had them and other companys phone me, i had one the other day about google, the deal was if someone searched in my area i would pop up, the conversation went as follows....
'Hello, Plum Tree Electrics'
'hello, im from blah blah'
'hi what can i do for you'
'we can offer you agreat deal on google searches'
he then goes on to explane
'no thanks mate, in not intrested'
'why, if someone searches for a plumber in gloucestershire dont you want to pop up'
'no'
'why'
'i'm not a plumber'
'what, this is plum tree electrics is't it'
'yes'
'well what do you do then'
'electrics'
'oh, bye'
lol had me chuckeling all evening