Changing canonical forms - is it wise?

[admagic]

I have just bought another PR7 site with some PR6, a lot of 5 and 4 pages to add to my collection.

The domain has been stable throughout the last couple of PR updates...it is old and the links are government/authority that are keeping it there - the content is the original content not a spam link farm on an authority domain.

But the last person that transferred the hosting IMHO made a mistake.

The indexed pages are all on one canonical form (non www) -
the links all point at the other form (www.) (http://www.))

1st Question


So , question is when I rehost, should I put the pages back where they belong on www. which is where the links point??

As I said - the PR has been stable for a considerable period, it just looks wrong.

2nd question

Also - it has page rank leaks, in the sense a comment spammer was allowed to post in numerous names pointing at the same domain.

I am tempted to mass edit the comments on reloading to point either internally or to useful sites of mine. Is that dangerous?


What do the wise SEO owls think?

[MASSEY]

What are the topics of the sites out of interest?

I doubt deleting the comments will affect you , the more sites you link to devalues your pr, from my research.