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Hello Folks, I run an eCommerce site for video surveillance equipment. We used to be on top of page one for related terms until about a year ago and now we are in page 2 or 3. We have 2 in house full time web developers and I have tried 3 different SEO firms with very poor results. I am looking for a competent SEO firm or consultant with proven & verifiable track record. If you or someone you know has used an SEO firm or consultant with good results, I would appreciate if you could point me to them. Thank You!

Over the weekend, we updated our store to a new server.  Before the switch, we had a robots.txt file on the new server that disallowed its contents from being indexed (we didn't want duplicate pages from both old and new servers). When we finally made the switch, we somehow forgot to remove that robots.txt file, so the new pages weren't indexed.  We quickly put our good robots.txt in place, and we submitted a request for a re-crawl of the site. The problem is that many of our search rankings have changed.  We were ranking #2 for some keywords, and now we're not showing up at all.  Is there anything we can do?  Google Webmaster Tools says that the next crawl could take up to weeks!  Any suggestions will be much appreciated.

If we change our site's server location to a new IP, will this affect anything involving SEO?  The site name and links will not be changing.

We're investigating a mobile version of our e-commerce site.  Is it worth the investment regarding search engine optimization, or is this something that wouldn't have a big effect?