Sgt_Kickaxe - 9:00 pm on Jun 30, 2010 (gmt 0)
Lots of mixed signals in this thread.
Re: Link search in Google
link:example.com and link:www.example.com are the same.
link: example.com and link: www.example.com with a space after the : are incorrect searches because you're asking Google to tell you how many sites link to SPACE with the term YOUR DOMAIN NAME. Space is the same as ALL SITES so you get a list of all sites that mention YOUR DOMAIN NAME. Don't use a space.
NOTE: if you DO see different results for www and non www incoming links you have an issue where Google thinks two versions of your site exist. Tell google in webmaster tools to index your site as either www, or non www, only. Next add .htaccess code to 301 redirect all of one version to the other and don't forget to go back to your site and MAKE SURE you only use one version in all of your own links.
Re: link value
There are charts on the internet that show you what a link is worth in terms of pagerank. While I don't think any of them are accurate they do show a relatively accurate scale. They suggest that a PR5 link is worth 3,333 PR4 links and 1 PR4 link is worth 3,333 PR3 links etc. Even if those numbers are off, which they likely are, you can see that a link with even 1 PR higher is worth much more and you can see that it would take tens of thousands (perhaps hundreds of thousands) of PR0 links to equal one PR6 link.
REMEMBER: if it's not related it may not count. Google has MANY reasons for not counting a link actually.
REMEMBER: If your site has a backlink profile that looks suspicious you might lose ALL link value. If you have no PR0-PR4 links but several hundred PR5+ somethings not right. For this reason you need ALL types of links, you would get all types naturally anyway. It is expected that you get more low level links than high, perhaps your high level incoming links can't even count UNTIL you have enough smaller ones... who knows. If you're out getting links get all links that make sense based on content and ignore how much PR they have.
Re: best place to get links
From sites similar to yours. Having a hard time doing that? Ask yourself this. You are willing to TAKE links but are you willing to GIVE them? Give and you shall receive! I know of several PR5 sites that link to the source and the manufacturer on every article and still enjoy a PR5, don't be afraid to link out when a link makes sense.
Tip of the day: don't forget to get incoming links to pages other than your index. If your main subject isn't about widgets but you do have a page that discusses how widgets interact with your subject go get widget links to that internal page. Even better, make that page the best online and watch them come in by themselves.
Mesaqe to Google - Stop placing so much importance on links, please. "getting links" is an entirely silly endeavor that skews results based on influence (or cash).