Just checked up SPHosting.com and at their comparison page between free, paid package 1, and paid package 2, it lists that hotlinking is not available for the free plan?....
I never noticed that they wouldn't allow hotlinking.
I guess it's been longer than I thought. Probably about 6 months since I've used them.
I'm sorry about that.
Maybe these will work ok. I haven't ever used them but. Just had it in my bookmarks for a rainy day incase I needed them.
http://www.hostmysig.com/ http://www.netfirms.com/hostingfree