which is the best Permalink structure for posts?

/%category%/%postname%/%post_id%/

is above mentioned structure is good for seo or not.

please tell me which is the best permalink structure for wp posts for seo.

 

Nothing wrong with that structure. Some people opt to just have %postname% but it isn't always practical depending on what kind of set up you have.

 

I agree with hmansfield, it depends on your category, example, if your category contains your keyword then it is a good idea to put category in it.

Personally i use %postname%

 

If your categories have strong relevant keywords, then put it along with postname. Just don't use date, it's useless for SEO. =)

 

i m using /%postname%.html and i think its best

 

It really depends on how you want it to be on Search Engines. You might want to use some keywords on the domain like "watch" or "download"