Do profile link(high pr site and main thing is its do follow), also do blog is get quality backlink..
please search and add your baklink by buying links on other sites in accordance with the niche your site, or you submit articles, because the more baklink your site will be able to maintain your site PR when google updates
First of all your site must have good content.Do exchange with high pr & theme related sites,directory submission .Increase link popualrity more & more.You can do article posting,press release ,book marking ,blog commenting etc.
Lots of comments already explain you how to get high pr. But you want us to do your work, and just give you a list of do follow high pr forums? LoL. And don't stare yourself blind on PR. The PR that you can see with seo tools is just a number. It has nothing to do with google. Just look at what position your website is and try to get it to go up. That's the reason you want high pr anyway.
The reality is that High pr is very difficult to get. Those who have got is only via Paid links or via those sources who have been affiliated or linked. The methods which are described here won't work if u want to get high pr within 3 months. U can get PR1 or Max PR2 for ur site but if u are targeting to get HIGH PR links u can't get that easily. Coz in natural way it would take hell lot of time and months. If u are going for paid u would get instantly but thats also issues in terms of GOOGLE's policies.
The best and the most strong thing to get the Page Rank its a get a backlinks on high pr site and also relevancy is the most strong part in backlinks. Thanks
In my all SEO experience the all i know about increasing PR is when you get good traffic but remember traffic should be static from Referring sites, Search Engine, Direct Traffic and Other.
Make Back Links As much As You Can ... The Best Way For me to getting back links is directory submission
If you want to increase page rank of your website... You have to do 3 way link exchange or put unique content in your website....It will help to increase Page Rank when Google will update your website next time....
I have recently visited this site. Your site layout is very very good. But I feel that content is problem there. You should upload some unique content according to service. And helps for article marketing you can generate more back links for site. And You can also try some high Pr Paid link according to niche.
its all about the backlinks, a site with a high amount of backlinks will eventually get a boost in PR, but will also maintain it's PR. It a site has a high PR with a few backlinks, then you can expect it to drop when ever there is an update.