Matt Cutts, Google's head of search spam announced on Jan 21st 2014 that guest blogging is dead if you are posting content only for building back links. On the other hand side web 2.0 resources are good for improving your brand value but promote websites using web 2.0 sites keeping the users in mind instead of the search engines.
Blogspot
Guest posting is out dated technique today, and if it is intended only for backlink it's spammy. Create and publish your own blog and share it on several good platform. My Blog Guest and PostJoint are famous and recently panalized sites by google.
guest post
guest posting
guest posting is good
Please go with web 2.0 sites.
For building which is best? web 2.0(blogger,wordpress etc) or guest postings. Which gives more link juice? please Ans me...