I Need BH Software Ideas!

I have 3 php/javascript programmers that are willing to code whatever I tell them too. The problem is I have no idea what to tell them. So I'm taking ideas for softwares that can be written in PHP and/or Javascript.

If I pick you idea, you unlimited free use of the software! (and it will be discounted to all other BHW members)

Thanks

PLEASE NOTE: That the software must be web based because will be coded mostly in PHP.