I have this site that has ranked #6, #12, but then sometimes goes completely off of the top #100. In fact, I dont even know if its listed in google. Am I sandboxed? Could someone look at it for me?
It sounds like you need a SEO expert. Don't try doing it yourself as you can get sandboxed, get someone who is an expert to help you out.
How old is the site? And yes, the site is in the sand box. We are recommending everyone start tracking the "first Google index" date of your site. The sand box effect last 6 to 8 months from the first home page index. With this information DP can start to profile this effect more accurately.
Are you guys sure its sandboxed? When type it in google it comes up. It right now it ranks, but its about 95th or so.
its not sandboxed. your site looks like tries to come up but keeps moving back. what you need is a solid base to keep the ranking. i suggest build some quality links with anchor text variation and your ranking will be stabilized
Work more on link building. Try to get some backlinks from other sites preferably with the keywords your site is built upon. Also do work out on your site's SEO. You can get a lot of help at websitegrader.com