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Hi  Bongani,

Here are some extra resources that could help you understand better what happens when you do layout / website changes. This is a video by Matt Cutts posted a wile ago, it also includes some other things but it also mentions things related to the layout:

Will changing the code and layout of my pages while moving to new URLs affect their rankings?

Also, besides what EGOL said I would also add another thing:

8. Be very careful about the Wordpress theme you are going to use. It's a good thing you already mentioned that you want it high quality. Just to be sure - I would check for any embeded / hidden links. I had some unpleasent experiences even with "high quality ones".

Hello Eran,

I'm 100% with kadesmith at each point he covers. So we are two now (small community :). I can add a few more things:

-> It's easy to fall in the "over optimized anchor text" pit when working with directories. At least if they do it like most of the people did it in the past. I had at least 1 website penalized because of these. If I were you I would approach them in this way: I would ask for what details do they need to submit to directories and then check if they would use the same anchor text in all directories. If they use the brand name as anchor text they might be aware of last changes. If not they are probably just doing it to get some money and don't really care for what happens.

-> link velocity -> is related to the historical changes in link profiles - and it mentioned by Google in some of their patents. If people submit to directories like they did in the past they will get a lot of links in a short amount of time. Google is able to detect this, and at least in theory is able to do some interesting stuff like: temporarily rank the website lower and wait to see if the owner of the website takes action to remove the links. This is not 100% confirmed, but personally I would take it into account.

So, directories are not necessarily a problem. But if they handle it the "old school" way, then probably it will be.