Apart from the fact that spl_spot's English is far too good for him to be a Nigerian fraudster, I don't think anybody is mug enough to splash out the cash on Scamityville Shysters spot before checking it out, especialy with the subsequent transfer and name change fees payable to the Millennium. At no point has it been asked for money to be transfered by Western Union either!
There are enough rumours about concerning who's playing what league/division, without teams revealing their hand early on in the off season, plus, as the OP has suggested, there is no need to make your current sponsors jittery, if you plan to say go up a Division, or switch leagues.