HDMI splitters

I have a question regarding HDMI splitters. I only have 1 HDMI port on my TV, and my PS3 is connected to it. My cable is connected through component cables, which is fine, but I’m thinking about cancelling my cable and purchasing a Roku2xs. The problem, it has only HDMI, where the Roku1 has component.

Is there an HDMI splitter that will NOT affect the connection from my PS3 to my TV?
Any recommended ones?

It’s not a splitter you’re after, but a switch. (Have a Google for HDMI switch)

None of these should cause any problems as they just make a physical connection between different cables for you, there shouldn’t be any processing going on.

Thanks Kingchimp