Lenses and Filters for digital cameras?
 

Im looking for some direction on what some useful lenses and/or filters would be for my digi. It's a Sony cyber-shot dsc-w70 (7.2 mpxl). I always see great photos on ls1tech and here, and know that they are a mix between filters and lenses. So does anyone have some recommendations on what they use and what could be used to it's best potential?