Regarding the 301 comment, this is something that everyone should be aware of.
If you currently have a website and will be moving it to another platform (such as WA), it is important to make a list of all of your old urls for every existing page. For each of them, you should do one of two things...
1. Make sure that the new site has the exact same url. It should work and be the same basic information on it.
2. Determine the new corresponding page and 301 redirect the old url to the new corresponding url.
In other words, if my old page is www.Site.com/aboutus.com and the new page is www.Site.com/pageid=12, the new site should create a 301 redirect to it.
There are two reasons why...
1. If someone has your old page as a favorite (or links to it from their site) and they select it, the 301 will automatically redirect them to the correct new page.
2. (More importantly) If Google knows of links to your old page, it will apply the value of that link to the new page.
This is pretty important.
Of course, if all your old pages have corresponding new pages that are the exact same URL, there is no need to worry about it. (That's unlikely.)
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