| 8:45 pm on Jan 14, 2013 (gmt 0)|
I've had sites go down for up to 8 hours without issue but not sure about longer...
| 9:13 pm on Jan 14, 2013 (gmt 0)|
I had a site go offline for about 3 months until I was able to do anything about it. The host pulled it down without notice and gave me a db dump. Had to find a new host, set up the software, and import the data. It wasn't my highest priority. In three months it lost all its rankings, and indeed appears to have to grow from nothing (inbound links from before it went down don't seem to help it).
So don't stay down for months.
| 9:20 pm on Jan 14, 2013 (gmt 0)|
Yep seen site sink a little when this happens, normally takes a few weeks to recover
| 12:19 am on Jan 15, 2013 (gmt 0)|
A day or two downtime shouldn't affect SEO, but it really depends how often Googlebot crawls your site. If you have a very active high traffic site and you had a 2 day downtime, then it may have some consequences, but if you have a static site I don't see any problem. Just based on my experience
| 1:19 am on Jan 15, 2013 (gmt 0)|
I think the safe zone is under 48 hours. I wouldn't want to be down any longer.
Google Webmaster tools will let you know if it has problems reaching your site.
| 2:37 am on Jan 15, 2013 (gmt 0)|
As the time offline gets longer, you also run increased risk of sites that link to you removing what they see as broken links.
| 3:36 am on Jan 15, 2013 (gmt 0)|
Throw up a "Down Temporarily for Maintenance" page that returns a 503 Service Unavailable HTTP status if possible. This will let the crawlers and visitors know that the outage is temporary.
| 3:33 pm on Jan 15, 2013 (gmt 0)|
Yah, one of my clients had his Magento store upgraded last year and unforeseen difficulties caused it to stay down for about 2.5 days - we served up a 503 and didn't suffer any major damage. That's about as long as I'd want to go, though.