Free site links to sponsors. FPAs/scripts ok?

[Viper]

I'm beta testing a new site for a program and was thinking of making some free sites. However, the current links to the program will change when they're ready to release it at which point I'd need to change my links.

So my question is, what do LLs allow? Is linking to FPAs allowed on all or the majority of LLs? What about linking thru a script to the program? I currently do that for all my own sites but in any free sites I've done I use the sponsor links.