How frequently should we change title

Thanks a lot for your helping hands..
Is there anybody who is having practical experience of such kind of changes..?

 

Every 6 months is good

 

Lol really yesterday night I had think what happens if I will try to change title tag dinamically with a php function, in a stabilied time not really frequent, something like 1 time in a month....
Ok all say don't do it, but someone has did a test?...
Maybe it can works I don't know, I think this can be a good test for Seo espert.

 

I have experienced the fluctuation in rankings when I changed my title tag. It makes sense that you could really confuse google by changing the title. However no one has yet said that "I changed my title and Google de-indexed my home page". One of my home pages has a string of carefully chosen keywords in it. I have added some keywords and rearranged the order of the keywords to try to rank higher for some of them. As you know, Google seems to give the keywords slightly more credit if they are at the very beginning of the title. I used to have the name of the business in the title and when I took out the business name and replaced it would solid keywords it made a BIG positive difference in traffic.

 

i think , you should not change it, but you changeit once a while its not harmful

 

I never change the title, because it have recognized by search engine very well...

 

I do agree with this answer.. title play an important role in SEO and every seo suggest to keep improving your site optimization. I have done a lots of changing within a week and found a positive result.