Quite simple really, one of my new sites has dropped from page 1 and 2 for keywords to page 30. I'm presuming I've been penalized or in the sandbox....anyone got some good ideas to get out the sandbox?
Giving your domain might help. You can check to see if you are penalised in a number of ways - there might be a message in Google Webmaster Tools.
You can do a search for your domain - like "markkh.com" - with the quotation marks. Your site should be returned as number 1. If its not, then I would say chances are good that you are being penalised.
Realistically, I think that new sites get thrown around a lot. If Google just kept giving the same results, you could screenshot them and not need to use it. Google has always used the user to select a result as part of it's ranking algorithm.
Its not uncommon to see new sites go in high and then drop off.