Change Meta tag is helpful or not?

As what I have read, meta tags now does not affect your rankings in Google.

 

I accept what anadmistry says ..... Seo Moz does not changes its title but does changes its contents.....
However Seo Moz is banking upon its blog a lot and not its homepage.... It is blog which people read not nothing is there in the homepage to read... So the topic is still the same... Changing title does reflects in rankings....

 

Honestly they still have the same impact as they had earlier... Yes Keyword meta does not play any role now... but Title sure does... Do me a favor change a title of your favorite page and wait for some time... Your page will get a dip....

 

choose perfect mata tag for your site because you do not change meta tag regularly for your site.it is effected on websites ranking.