(Not sure if this is correct category, so sorry if it is in wrong area).
My website ranked for a nice, short competitive terms. An example is 'widget for sale'.
My homepage can no longer be found in the top 1000 results for any of the main keywords it use to rank for. The only way you can see it in the serps is if you search 'mywebsite.com'.
Now, the part that has me confused is that the rest of my website is unaffected. It is as if the penalty is on my homepage, and nothing else because all my other pages rank fine.
Small info on my site:
*5 months old
*A number of site-wide banners from advertising on niche related websites/authorities.
*Website has sitelinks on google
*I was doing some restructuring with my site, and uploaded it to the live site February 14th, shortly before the panda update.
*Website has a TON of 404 errors because of new structure. I fixed everything I could with 301's.
*My site is quality and useful, and I know because I interact with the people who use it, and 99% of everyone loves the site.
Now my questions:
Does anyone have a clue about what possible penalty could have hit my site?
Do you think this is happening because my site is so young, and has too many site wide links, 404's, etc?
My initial response is that it will just take time for it to get back in the SERPs, but want some other opinions.