What is "too many" keywords for a page? Is there a maximum length for keywords?
What is the maximum length for a title and description?
There is no limitation or any guidelines to restrict your Meta Title & Meta Description. I saw too many website with 300+ characters Meta Title & 350+ characters Meta Description. But, It is on top 3 in Google, Yahoo & Bing. Meta Title & Meta Description are ultimate way to give info about your page. If your page have not title or description so, It will not help to give proper idea about your page in front of search engine users. If you will create your Meta Title & Meta Description in such manner so, It will appear in search engine without cutting edge. Search engine user will get more idea about your page & raise possibility to click on your link. In current practice: I suggest 60 to 65 characters in Meta Title & 150 to 160 characters in Meta Description.
Originally Posted by 411onseo
I woud ... not use more then 15 (and even 15 is a way to big number)
I allways try to concentrate on 3-4 is the best strategy ...