What is guest posting..update list of guest post website

A guest post is a piece of content the author and the blogger arrange to publish on the blogger's site for free. The guest post belongs to the author and is attributed to him. It is up to the author which sites to link to within the post and it is up to the blog owner to accept/reject the contribution.
So the concept is quite straightforward:

• The author writes an article and shows it to the blogger;
• The blogger decides if the article fits his blog and if yes, publishes it on the site.
• (Optionally) The blogger and the author may arrange that the author promotes (i.e. shares) his post once it is published (and thus drives more traffic to the blogger's site).

Advantage

free links and free content!
Guest posting is the process of obtaining natural back-links from some of the most authoritative websites in that particular niche by contributing splendid content in lieu of a back-link.

In the post-penguin era, it’s not possible to build bulk back-links by simply blasting out blog comments using tools like SEONuke, and one needs to be extremely careful about the link build methodologies at this crucial point of time, when Google is wiping out tons of websites every other day.

The greatest advantage of guest posts is that the back-links obtained through this methodology appear totally natural to the search engines, and this strategy of back-link generation is considered to be totally ethical, and isn’t frowned upon by the search engines unlike some of the other black-hat SEO tactics.

Reason for guest blogging

• We could have lots of reason for choosing guest blogging and some of them are:
• For getting high quality, targeted and niche specific backlinks 
• For driving more targeted traffic to our website 
• For increasing our website page rank and search engine rankings for targeted pages and targeted search terms 
• For Branding purpose 
• For building relationship with other bloggers and to connect with their blog readers 
• To show your expertise about a specific topic or for improving your overall writing skills 

List of  Guest Blogging sites with High PR

mashable.com/submit/

investing.com/about-us/contributor-benefits

bodybuilding.com/fun/writer-listing-a-i.html

sitepoint.com/write-for-us/

seekingalpha.com/page/become-a-seeking-alpha-contributor

fatwallet.com/blog/blogging-guidelines/

slashdot.org/submission

shoutmeloud.com/join-shoutmeloud

lifehack.org/contribute

sheknows.com/write

articles.mercola.com/submit/

hongkiat.com/blog/write-for-us/

psychologytoday.com/writers-guidelines

smashingmagazine.com/how-to-become-a-smashing-magazine-author/

travelblog.viator.com/contact-viator/write-for-us/

socialmediaexaminer.com/writers/

naturalnews.com/021982.html#

matadornetwork.com/content/contributors-and-job-applicants/

blog.kissmetrics.com/guest-blogging-for-kissmetrics/

business2community.com/become-a-contributor

yourtango.com/submissions

digital-photography-school.com/write-for-digital-photography-school

designmodo.com/contribute/

makezine.com/contribute/

socialmediatoday.com/how-to-post?ref=navbar

articles.bplans.com/authors/

copyblogger.com/copyblogger-guest-post/

speckyboy.com/contribute-an-article/

sitepronews.com/call-for-writers/

matthewwoodward.co.uk/write-for-us/

smallbiztrends.com/contact

selfgrowth.com/submit_articles

moneycrashers.com/write-for-us/

marketingprofs.com/write-for-us

incomediary.com/about#contact

iwillteachyoutoberich.com/write-a-guest-post-for-i-will-teach-you-to-be-rich/

virgin.com/news/become-virgincom-guest-blogger

techsling.com/submit-article-to-blog/

techwalls.com/become-our-writer/

globalgrasshopper.com/write-for-us/

spiceupyourblog.com/p/write-for-us-guest-post-for-spice-up.html

dzineblog.com/contribute

webanddesigners.com/write-for-us/

blog.mycorporation.com/become-author-mycorporation/

theselfemployed.com/writers-guidelines/

techie-buzz.com/write-for-us-guest-post/

itechcode.com/join-itechcode/

chillopedia.com/contribute/

madlemmings.com/guest-posting/

whitecoatinvestor.com/contact/guest-post-policy/

timemanagementninja.com/guest-post/

todaysmama.com/write-for-us/

thechangeblog.com/write-for-the-change-blog/

callingallgeeks.org/write-for-us/

imperfectwomen.com/contact/

thesportsbank.net/write-for-us/

coolhomepages.com/blog-submission.html

crazyleafdesign.com/blog/contributors/

cashmoneylife.com/write-for-cash-money-life/

hackcollege.com/contact-hackcollege

contentmarketingup.com/writing-portfolio/submit-guest-post/

lazymanandmoney.com/guest-post-guidelines/

velvetescape.com/contact/

cruzine.com/write-for-us/

lkrsocialmedia.com/guest-post-guidelines/

techfor.us/guestpost-guidelines/

biblemoneymatters.com/contact/contribute/

chillisauce.co.uk/blog/write-for-us/

bloggodown.com/write-for-us

financialsense.com/about-us/contributor-info/become-a-contributor

blog.triphp.com/contact-me/become-an-author

blog.slashsquare.org/guest-authors-checklist/

quickregister.net/wordpress/guest-blogging/

onecentatatime.com/guest-post/

smartbloggerz.com/write-for-us/

webtrafficroi.com/guest-post/

colorburned.com/write-for-us/

foxnomad.com/about/guest-posts/

shetakesontheworld.com/submission-guidelines/

womenonbusiness.com/write-for-women-on-business/

http://www.ultravr.org/submit-a-story/

manvsdebt.com/guest-post-guidelines/

startupchamp.com/write-for-us/

stylishwebdesigner.com/write-for-us/

workitmom.com/submission/

stayonsearch.com/write-for-us

productiveflourishing.com/guest-post-guidelines/

marinmommies.com/write-marin-mommies

designdisease.com/contribute/

webdeveloperjuice.com/write-for-us/

web3mantra.com/write-for-us/

myinkblog.com/contribute/

graphicmania.net/contribute/