For number 3 I am showcasing a few sites for freelance photographers.
Citizen Image
Sell Photos 

 
72Photos
Host Photos 

 
Pixifi
Project and Client Management for Photographers
 
 
Picsviewr
Awesome flickr photos viewer
 

A big question in the web industry is which hosting company you should go for.  There is no perfect choice for everyone, but you will find one that is pretty perfect for you.  I made a PDF spreadsheet as a feature comparison chart broken into groups of Sub $5, Sub $10, Sub $15, and Sub [...]