I have some cell phone review articles. I apply for some public blogs such Blogger.com and Wordpress.com. I post each review article with my website's link to these public blog websites. is it worth to increase links for my website?
it needs to be a) good quality b) unique c) posted on a decent quality site, not a free one. Its proberly better to buy a .info domain
yes, it's good. but make sure you also build links to those blogs as well it will make their links (the links they send to your main site) 'stronger'