Meta title updates?

[webpromoters]

This post is deleted!

[kennyrowe]

I'd go for leaving meta titles up longer, even permanently if they're the best to describe your content. SEO is a long-term project in general in achieve the best SERP requires the factor of time. Instead of changing the meta title, you can try link building for different terms that you're trying to drive to your main pages that maybe don't fit in the meta title. There are many keywords that describe any website, but usually, there are better ones and search engines sometimes end up choosing what they think is best for your page from the content, no matter what you put in the title.

[plata]

Why update the main page's meta title monthly?  Is it to highlight special offers?  To stand out from the crowd?  To gather and improve CTR metrics?

Regular visitors will find your meta title familiar and wont need it to change often.  New visitors wont know what the old title was anyway.

Unless you can really track the success of meta description changes on a monthly basis I suggest you update it less frequently and concentrate on optimising other content.